thats ok什么意思

　　例句：

　　1.That's OK. I'm just looking around.

　　沒關系，我只是隨便看看。

　　2.If that's OK with you.

　　如果這樣對你可以的話。

　　3.I'd rather email than phone, if that's OK by you.

　　如果你認為可以的話，我想發電郵而不打電話。