n.流沙；陷阱

A mule won't sink in quicksand but a donkey will. 騾子不會(huì)陷入流沙中,但是驢子會(huì)。

Is it true that a man who steps into quicksand is doomed to die? 掉入流沙中的人就注定會(huì)死去嗎？

Vanity is the quicksand of reason. 虛榮乃理學(xué)之流沙。

Conceit is the quicksand of success. 自負(fù)是成功的流沙。