conversant
词形变化：
词义辨析：
同义:
a.熟悉的, 精通的
acquainted with
familiar with
knowledgeable in
versed in
learned
skilled
practiced
proficient
au courant
informed
up-to-date
experienced
au fait
abreast
a.亲近的, 有交情的
acquainted
familiar
sociable with
friendly with
on good terms with
comfortable with
同义参见:
literary