例句：

　　The valley is continuously watered by the melting snow from the mountains.

　　群山融化的雪不斷流經(jīng)山谷。

　　However, only a few survived, because the trees were not regularly watered.

　　然而，因?yàn)檫@些樹(shù)木沒(méi)有定期澆水，所以只有少數(shù)幸存了下來(lái)。