名詞 quicksand:

1. a treacherous situation that tends to entrap and destroy
2. a pit filled with loose wet sand into which objects are sucked down

1. A place filled with mud or quicksand that is a hazard to cattle.
   沼穴充滿(mǎn)泥漿或流沙的地方，可對(duì)牛群構(gòu)成威脅

quick.sand

n.（名詞）
A bed of loose sand mixed with water forming a soft, shifting mass that yields easily to pressure and tends to engulf any object resting on its surface.
流沙：一種由松散的沙子和水混合成的沙層，形成一堆松軟、移動(dòng)的物質(zhì)，在壓力下很容易塌陷，并可吞沒(méi)置留在沙面上的任何物質(zhì)
Often quicksands A place or situation into which entry can be swift and sudden but from which extrication can be difficult or impossible:
常作 quicksands 陷阱：一種可快速輕易進(jìn)入的地方或形勢(shì)，但從中脫身可能很困難或不可能的：
例句：
.This theory of the future entrapped[them] in the quicksands of Vietnam. (Arthur M. Schlesinger, Jr.)
.這一關(guān)于未來(lái)的理論使［他們］ 掉進(jìn)了越南這個(gè)泥潭之中. (小阿瑟M.施萊辛格)