(一).I just had time to pop in. 我抽空来看一眼.

原音重现：

A：Hi, Randy. I'm surprised to see you here.

喂，兰迪，想不到会在这里看到你。

B: I just had time to pop in for a visit.

我只是抽空来看一下。

(二).Who is it? 谁呀?

原音重现：

A：Who is it?

谁呀?

B: It's the mailman. I have a letter for you.

我是邮递员，有你的信。