形容詞 conversant:

1. (usually followed by `with') well informed about or knowing thoroughly
   同義詞：familiar

1. The state of being conversant; familiarity.
   熟悉熟悉、精通的狀態(tài); 熟識(shí)
2. Our manager is conversant with account system.
   我們的經(jīng)理精通會(huì)計(jì)制度。
3. I am thoroughly conversant with all the rules.
   我對所有的規(guī)則了如指掌。
4. She is conversant with English.
   她精通英語。

con.ver.sant

adj.（形容詞）
Familiar, as by study or experience:
精通的：（如通過學(xué)習(xí)或經(jīng)歷）熟悉的：
例句：
conversant with medieval history.
精通中世紀(jì)歷史

來源：
Middle English conversaunt [associated with]
中古英語 conversaunt [與…有聯(lián)系]
from Old French conversant [present participle of] converser [to associate with]
源自 古法語 conversant [] converser的現(xiàn)在分詞 [與…交往]
from Latin convers3ro * see converse
源自 拉丁語 convers3ro *參見 converse

【引伸】
conver.santly
adv.（副詞）