Can I leave you to square up with the waiter?

我先走，你来和服务员结账好不好？

We have to square up to the problem.

我们得正视这个问题。

Let's square up; how much is the bill?

我们把帐结清吧，帐单上是多少钱？

Please square up and come back at once.

结清帐目请立即回来。

You 'll have to square up to your problems.

你必须正视你的问题。