1.
If you pretend to know what you don't know, you'll only make a fool of yourself.
不懂装懂就会闹笑话。
2.
Don't know? Well, learn to.
不懂，就好好学呗。
3.
"I really can't understand you, Huei-fang!
“四妹！我真不懂你！
4.
George doesn't know French, to say nothing of Chinese.
乔治不懂法文，更不用说懂中文了。
5.
He knows neither French nor Russian .
他既不懂法语也不懂俄语。
6.
I don't know about fortunes or fortune-telling.
我既不懂得命运也不懂得算命。
7.
He knows neither English nor Chinese.
他既不懂英语又不懂汉语.
8.
I could not understand his words, not could he understand me.
我听不懂他的话，他也听不懂我的。
9.
He that knows not how to hold his tongue, knows not how to talk.
不懂得如何缄口的人，不懂得如何开口。
10.
If it is beyond John, it is certainly beyond me.
如果约翰弄不懂的话，我肯定也弄不懂。
11.
Some people are good at borrowing but bad at giving back.
有些人只懂得借，不懂得还。
12.
She did not understand Latin, but she understood the book.
她不懂拉丁文，但是懂那本书。
13.
I couldn't make out the baby's jargon.
我听不懂那婴孩说的难懂的话。
14.
He was ignorant of the world.
他不懂事，他不谙世故。
15.
Don t Understand Individual Private Economy, or Don t Understand China and Socialism with Chinese Characteristics;
读不懂个私经济,还是读不懂中国,读不懂有中国特色的社会主义
16.
I couldn't understand what you babbled out
我听不懂你的胡言乱语。
17.
If you don't know, just ask.
你要是不懂，就问好啦。
18.
The oyster could not understand this.
牡蛎弄不懂这是为什么。