请问“掌握”知识的“掌握”用英文怎么说?

Question

请问“掌握”知识的“掌握”用英文怎么说?

Answer 1

知识掌握:mastery of knowledge
掌握:grasp
Relative explainations:

Examples:
1.她已全面掌握了这一学科.
She has a comprehensive grasp of the subject.
2.掌握无限空间的概念是很难的.
It is difficult to grasp the concept of infinite space.
3.贵族统治时代人们的命运并不掌握在自己手中.
In time of aristocracy,people's fates are not in the hands of themselves.
4.我们完全掌握了情势.
We have the situation well in hand.
5.谁掌握国家的最高权力?
Who holds sovereign power in the state?
6.他掌握会议可真有一套.
His handling of the meeting was quite a virtuoso performance.