降

降

"降" means "to descend," "to fall," or "to lower."

In this sentence, '降' is used as part of the verb '下降', which means 'to drop' or 'to decrease' and is applied to describe a decrease in temperature.

气温突然下降了。

The temperature suddenly dropped.

Here, '降' appears in the compound verb '降落', signifying 'landing'. It describes the action of an aircraft descending and touching the ground.

飞机在跑道上安全降落了。

The airplane safely landed on the runway.

In this usage, '降' means 'fall' or 'come down', as part of '降雨', which specifically refers to rain falling from the sky.

请注意高空的降雨情况。

Please pay attention to the rainfall condition from high-altitude areas.