You use somewhere to refer to a place without saying exactly where you mean.
I've got a feeling I've seen him before somewhere.
我有一种感觉,我曾在哪里见过他。
I'm not going home yet. I have to go somewhere else first.
我还不准备回家。我得先去别的地方。
I needed somewhere to live.
我需要有个住的地方。
You use somewhere when giving an approximate amount, number, or time.
He is believed to be worth somewhere between seven million and ten million dollars.
据说他的身价大约700万到1000万美元之间。
Caray is somewhere between 73 and 80 years of age.
凯瑞大约在73岁到80岁之间。
be getting somewhere
If you say that you are getting somewhere, you mean that you are making progress towards achieving something.
At last they were agreeing, at last they were getting somewhere.
他们最终达成了共识,终于取得了一些进展。