deepenvt.
英 'diːp(ə)n | 美 'dipən
中文vt. 使加深；使强烈；使低沉\nvi. 变深；变低沉
使加深；使强烈；使低沉
vi. 变深；变低沉
词根词源
deepen (v.)c. 1600, from deep (adj.) + -en (1). Related: Deepened; deepening. The earlier verb had been simply deep, from Old English diepan.
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