It's very cold in the polar regions.

南北极带是很寒冷。

The polar region is the habitat of the polar bear.

北极带为北极熊栖息。

Results Nerve endings of muscle spindle in equatorial and polar regions were dyed black;intrafusal fibers were dyed buffy.

结果肌梭赤道部与两极部神经末黑色，清晰可见，梭内肌纤维染为黄色。

Thermokarst failures occur when permafrost—a layer of frozen soil in Earth's polar regions—thaws and becomes unstable, possibly releasing greenhouse gases into the atmosphere.

随着永久冻带消溶和分崩离析，热喀斯特现象大量出现，埋藏于（甲烷等）温室气体可能散发到大气中。

: In polar region, apart from the bright stars seen under moon night, ever changing aurorae are making scenes after scenes of celestial display in the darkness.

在北极圈范围，月夜除了能够看到天上明亮星外，变幻莫测极光往往在夜�上著演一幕又一幕天文表演。

It's very cold in the polar regions.

南北极地带是很寒冷的。

The polar region is the habitat of the polar bear.

北极地带为北极熊的栖息地。

Results Nerve endings of muscle spindle in equatorial and polar regions were dyed black;intrafusal fibers were dyed buffy.

结果肌部与两极部神经末梢呈棕黑色，清晰可见，内肌纤维染为棕黄色。

Thermokarst failures occur when permafrost—a layer of frozen soil in Earth's polar regions—thaws and becomes unstable, possibly releasing greenhouse gases into the atmosphere.

随着永久冻带消溶和分崩离析，热喀斯特现象大量出现，埋藏于地下的（甲烷等）温室气体可到大气中。

: In polar region, apart from the bright stars seen under moon night, ever changing aurorae are making scenes after scenes of celestial display in the darkness.

在北极圈范围，月夜下除了够看到天上明亮的星外，变幻莫测的极光往往在夜�上著演一幕又一幕的天文表演。

It's very cold in the polar regions.

南北极地带是很寒冷。

The polar region is the habitat of the polar bear.

北极地带为北极熊栖息地。

Results Nerve endings of muscle spindle in equatorial and polar regions were dyed black;intrafusal fibers were dyed buffy.

结果肌梭赤道部与两极部神呈棕黑色，清晰可见，梭内肌纤维染为棕黄色。

Thermokarst failures occur when permafrost—a layer of frozen soil in Earth's polar regions—thaws and becomes unstable, possibly releasing greenhouse gases into the atmosphere.

随着永久冻带消溶和分崩离析，热喀斯特现象大量出现，埋藏于地下（等）温室气体可能散发到大气中。

: In polar region, apart from the bright stars seen under moon night, ever changing aurorae are making scenes after scenes of celestial display in the darkness.

在北极圈范围，月夜下除了能够看到天上明亮星外，变幻莫测极光往往在夜�上著演一幕又一幕天文表演。

It's very cold in the polar regions.

南北极带是很寒冷的。

The polar region is the habitat of the polar bear.

北极带为北极熊的栖息。

Results Nerve endings of muscle spindle in equatorial and polar regions were dyed black;intrafusal fibers were dyed buffy.

结果肌梭赤道部与两极部神经末梢色，清晰可见，梭内肌纤维染为黄色。

Thermokarst failures occur when permafrost—a layer of frozen soil in Earth's polar regions—thaws and becomes unstable, possibly releasing greenhouse gases into the atmosphere.

随着永久冻带消溶和分崩离析，热喀斯特现象大量出现，埋藏的（甲烷等）温室气体可能散发到大气中。

: In polar region, apart from the bright stars seen under moon night, ever changing aurorae are making scenes after scenes of celestial display in the darkness.

在北极圈范围，月夜除了能够看到天上明亮的星外，变幻莫测的极光往往在夜�上著演一幕又一幕的天文表演。

It's very cold in the polar regions.

南北极地带是很寒冷的。

The polar region is the habitat of the polar bear.

北极地带为北极熊的栖息地。

Results Nerve endings of muscle spindle in equatorial and polar regions were dyed black;intrafusal fibers were dyed buffy.

结果肌梭赤道部与两极部神经末梢呈棕黑色，清晰可见，梭内肌纤维染为棕黄色。

Thermokarst failures occur when permafrost—a layer of frozen soil in Earth's polar regions—thaws and becomes unstable, possibly releasing greenhouse gases into the atmosphere.

随着永久冻带消溶和分崩离析，热喀斯特现象大量出现，埋藏于地下的（甲烷等）温室气体可能散发到大气中。

: In polar region, apart from the bright stars seen under moon night, ever changing aurorae are making scenes after scenes of celestial display in the darkness.

在北极圈范围，月夜下除了能够看到天上明亮的星外，变幻莫测的极在夜�上著演一幕又一幕的天文表演。

It's very cold in the polar regions.

南北极带是很寒冷的。

The polar region is the habitat of the polar bear.

北极带为北极熊的栖息。

Results Nerve endings of muscle spindle in equatorial and polar regions were dyed black;intrafusal fibers were dyed buffy.

结果肌梭赤道部与两极部神经末梢呈棕黑色，清晰可见，梭内肌纤维染为棕黄色。

Thermokarst failures occur when permafrost—a layer of frozen soil in Earth's polar regions—thaws and becomes unstable, possibly releasing greenhouse gases into the atmosphere.

随着永久冻带消溶和分崩离析，热喀斯特现象大量出现，埋藏于下的（甲烷等）温室气体可能散发到大气中。

: In polar region, apart from the bright stars seen under moon night, ever changing aurorae are making scenes after scenes of celestial display in the darkness.

在北极圈范围，月夜下除了能够看到天上明亮的星外，变幻莫测的极光往往在夜�上幕又幕的天文表。

It's very cold in the polar regions.

南北极地带是很寒冷。

The polar region is the habitat of the polar bear.

北极地带为北极熊栖息地。

Results Nerve endings of muscle spindle in equatorial and polar regions were dyed black;intrafusal fibers were dyed buffy.

结果肌梭赤道部与两极部神经末梢呈棕黑色，清晰可见，梭内肌纤维染为棕黄色。

Thermokarst failures occur when permafrost—a layer of frozen soil in Earth's polar regions—thaws and becomes unstable, possibly releasing greenhouse gases into the atmosphere.

随着永久冻带消溶和分崩离析，热喀斯特现象大量出现，埋藏于地下（甲烷等）温室气体可能散发到大气中。

: In polar region, apart from the bright stars seen under moon night, ever changing aurorae are making scenes after scenes of celestial display in the darkness.

在北极圈范围，月夜下除了能够看到上明亮星外，变幻莫测极光往往在夜�上著演一又一文表演。

It's very cold in the polar regions.

南北极地带是很。

The polar region is the habitat of the polar bear.

北极地带为北极熊栖息地。

Results Nerve endings of muscle spindle in equatorial and polar regions were dyed black;intrafusal fibers were dyed buffy.

结果肌梭赤道部与两极部神经末梢呈棕黑色，清晰可见，梭内肌纤维染为棕黄色。

Thermokarst failures occur when permafrost—a layer of frozen soil in Earth's polar regions—thaws and becomes unstable, possibly releasing greenhouse gases into the atmosphere.

随着永久冻带消溶和分崩离析，热喀斯特现象大量出现，埋藏于地下（甲烷等）温室气体可散发到大气中。

: In polar region, apart from the bright stars seen under moon night, ever changing aurorae are making scenes after scenes of celestial display in the darkness.

在北极圈范围，月夜下除了到天上明亮星外，变幻莫测极光往往在夜�上著演一幕又一幕天文表演。

It's very cold in the polar regions.

南北带是很寒冷的。

The polar region is the habitat of the polar bear.

北带为北熊的栖息。

Results Nerve endings of muscle spindle in equatorial and polar regions were dyed black;intrafusal fibers were dyed buffy.

结果肌梭赤道部与两部神经末梢呈棕黑色，清晰可见，梭内肌纤维染为棕黄色。

Thermokarst failures occur when permafrost—a layer of frozen soil in Earth's polar regions—thaws and becomes unstable, possibly releasing greenhouse gases into the atmosphere.

随着永久冻带消溶和分崩离析，热喀斯特现象大量出现，埋藏于下的（甲烷等）温室气体可能散发到大气中。

: In polar region, apart from the bright stars seen under moon night, ever changing aurorae are making scenes after scenes of celestial display in the darkness.

在北圈范围，月夜下除了能够看到天上明亮的星外，变幻莫测的光往往在夜�上著又的天文表。