“沉下”造句

有那么一会儿他让自己沉下心来仔细分析一下对她的感情。
For a moment he allowed himself the indulgence of examining his feelings for her.

他气得沉下脸来.
His face darkened with anger.

我们现在朝向加拉巴戈斯裂谷沉下.
We are descending into the Galapagos Rift Valley.