conversant

熟悉的，精通的

常用作表语，后面接用with。

【例】Being experienced in import business, they ought to be thoroughly conversant with import formalities.

他们经营进口业务时间很长，对进口手续应十分熟悉。

conversion

转换，变换

①【例】All the banks in the city have completed the conversion from manual to computer accounting.

该市的所有银行都已完成了由手工记账到电脑记账的转换。

②用作定语。

【例】The conversion [exchange] rate between US dollars and RMB is a floating rate, not a fixed one.

美元和人民币的兑换率是浮动汇率，而不是固定汇率。

convert

改变，兑换

宾语后常接用into或to。句式：convert sth into [to] sth。

【例】They converted their dollars into pounds upon arriving in London.

他们一到伦敦之后，便将美元兑换成英镑。