Steep mountain valley, cutting poleaxe cliff can be seen everywhere.

峡谷内山高路险、刀削斧劈的悬崖随处见。

Before the 1970s the slide rule, or slipstick, was as common as the typewriter or the mimeograph machine.

1970年代之前，计算字机和油印机一样，随处见。

Steep mountain valley, cutting poleaxe cliff can be seen everywhere.

峡谷内山高路险、刀削斧劈的悬崖随处。

Before the 1970s the slide rule, or slipstick, was as common as the typewriter or the mimeograph machine.

1970之前，计算尺跟打字机和油印机一样，随处。

Steep mountain valley, cutting poleaxe cliff can be seen everywhere.

峡谷内山高路险、刀削斧劈的处见。

Before the 1970s the slide rule, or slipstick, was as common as the typewriter or the mimeograph machine.

1970年代之前，计算尺跟打字机和油印机一样，处见。

Steep mountain valley, cutting poleaxe cliff can be seen everywhere.

峡谷内山高路险、刀削斧劈随处见。

Before the 1970s the slide rule, or slipstick, was as common as the typewriter or the mimeograph machine.

1970年代之前，计算尺跟打字机和油印机一样，随处见。

Steep mountain valley, cutting poleaxe cliff can be seen everywhere.

山高路险、刀削斧劈的悬崖随处见。

Before the 1970s the slide rule, or slipstick, was as common as the typewriter or the mimeograph machine.

1970年代之前，计算尺跟打字机和油印机一样，随处见。

Steep mountain valley, cutting poleaxe cliff can be seen everywhere.

峡谷内山高路险、刀削斧劈的悬崖随处见。

Before the 1970s the slide rule, or slipstick, was as common as the typewriter or the mimeograph machine.

1970年，计算尺跟打字机和油印机一样，随处见。

Steep mountain valley, cutting poleaxe cliff can be seen everywhere.

峡谷内路险、刀削斧劈的悬崖随处见。

Before the 1970s the slide rule, or slipstick, was as common as the typewriter or the mimeograph machine.

1970年代之前，计算尺跟打字机和油印机一样，随处见。

Steep mountain valley, cutting poleaxe cliff can be seen everywhere.

峡谷路险、刀削斧劈的悬崖随处见。

Before the 1970s the slide rule, or slipstick, was as common as the typewriter or the mimeograph machine.

1970年代之前，计算尺跟打字机和油印机一样，随处见。

Steep mountain valley, cutting poleaxe cliff can be seen everywhere.

峡谷内山高路险、刀削斧劈的悬崖随处。

Before the 1970s the slide rule, or slipstick, was as common as the typewriter or the mimeograph machine.

1970之前，计算尺跟打字机和油印机一样，随处。