Terms containing have a good command of

Subject	English	Chinese
tech.	have a good command of	精通
gen.	have a good command of	M 对 M 能自由运用
China, law	have a good command of sign language	通晓聋、哑手势
China, law	have a good command of the sign language	通晓手语
busin.	have a good command of the working languages	熟练掌握工作语言
busin.	have three years of experience in translation or interpretation and a good command of the working languages	有三年笔译或口译工作经验，熟练掌握工作语言一种或多种