So much is at stake right now, the existential threat of climate change has never been clearer.

现在面临的威胁是，气候变化的存在性威胁从未此明显。

But in jungle canopy, light is coming from all over the place and the background is far more variable.

但在丛林遮盖中，光从各处进来，而背景的变化性多得多。

To interpret monitoring data (e. g. , to support an assessment of the appropriateness of revalidation or changes in sampling).

解释监测数据（例，支持评估重新验证或抽样变化的适当性）。

Some scientists suspect the SORCE data may be exaggerating the sun's variability, and if they were revised the link might go away.

一些科学家怀疑SORCE的数据可了太阳的变化性，果数据一经修改，两者的关联可也不复存在了。

Interestingly, this represents one half of a larger cycle known as the Hale cycle, which  maps the changes in the Sun's magnetic polarity.

有趣的是， 这代表了称为黑尔周期的更周期的一半，该周期绘制了太阳磁极性的变化。

And as recently as this summer, you experienced the hottest recorded week in history, even as some deny the severity, in fact, the existence of the climate emergency.

而就在今年夏天，你们经历了有气象记录以来最热的一周——即使现在还有些不相信气候变化的急迫性。