1、sink in 渗入；完全被理解

eg Then, according to myth, the city sank in the sand, lost forever.

后来，这个城市神秘的沉入沙漠中，失踪了。

2、as if 犹如，好似

eg Right now, start acting as if the above statement is true at all times.

如果上面的那句话在任何时候都是真的，现在，就开始行动。

3、unexpectedly adv. 出乎意料地，意外地

eg The terrorists were killed when their bomb detonated unexpectedly.

那些恐怖分子的炸弹意外爆炸时他们被炸死了。

4、tremble at 因…而发抖

eg Now I tremble at your name.

现在我因你的名字而颤动。