“掌握”有几种表达法,最好有例子.

master v.
精通,掌握
Russian is a difficult language to master.
俄语是门难以精通的语言.
grasp领会,理解
v.I don't grasp your meaning.
我不懂你的意思.
n.
His ideas are beyond my grasp.
他的想法我不能理解.
command
n.掌握;运用能力[U][S1]
She has a good command of spoken English.
她的英语口语很熟练.
hold
n.掌握;支配(力)[U][C][(+of/on/over)]
He's got a good hold of his subject.
他很好地掌握了自己的学科.
v.