英语新词汇与常用词汇的翻译(76)(4) ... know one's place 知趣 know one's stuff 精通自己的业务 know sb by face 只认识某人之脸孔 ...
权威例句
1.
And Pakistan is not known to have conducted any tests, yet its arsenal has been assembled assiduously, thanks in no small measure to technical assistance given Islamabad by China.
CENTERFORSECURITYPOLICY: Center For Security Policy