submerge

v. 使浸水,潜入水中,使陷入

At the first sign of danger the submarine will submerge.

一有危险迹象，潜艇就会潜入水中。

Such feelings tend to remain submerge beneath a mask of social politeness.

在社交礼貌的掩盖下，这样的情感往往不会显露出来。