下山的用法和樣例：
例句
-
太陽下山後天氣很快就會冷下來。
It gets cold quickly when the sun goes down. -
太陽下山了。
The sun descended behind the hills. -
樵夫背著柴火下山了。
The woodsman carried the firewood down the hill. -
石頭滾下山時，它的動量增加。
As the rock rolled down the mountainside, it gathered momentum. -
下山差不多花了兩個小時。
The descent down the mountain took nearly two hours.
