懂俄语
know Russian
懂军事
understand military affairs
懂得风俗习惯
understand manners and customs
懂得很多
know a lot
一点儿也不懂音乐
have no ear for music
不懂艺术
have no appreciation of art
不懂装懂
pretend to understand what one does not
你懂了没有？
Do you understand?
在这方面我还懂点门道。
I know a thing or two about this.
钳工这活儿我还懂得一点。
I know a bit about bench work.
我懂得一点医道。
I have a little medical knowledge.
他懂得我的意思。
He knows what I mean.
我真不懂他是什么意思。
I really don't know what he means.
我怎么也不懂，为什么一定要这样。
I just can't figure out why it has to be like this.