that's

thats ok的同义句可以改成：Thats fine/All right。

thats ok 没关系

I think the code is more elegant but others may not and that is OK.

我认为代码更优雅，但其他人可能不会，这是确定。

That is OK during the learning phase but when the dog gains proficiency this needs to end.

在学习阶段这是好事，但是当狗熟练了以后，必须结束这种局面。

I am not OK, you are not OK, But that is OK.

虽然我不太好，你也不太好，但这没什么不好。