'Wow' - W-O-W - is a word that we use when we are really surprised by something - and pleased!

哇，- W-O-W -用在当我们对什么极度吃惊或是极度开心的时候。

Next, T-W-O, also pronounced tu, you're welcome, is a number.

接下来，T-W-O，也发音为 tu，不客气，是一个数字。

T-W-O, the number two, is a number so you'd say I ordered two pizzas.

T-W-O，二号，是一个数字，所以你会说我点了两个披萨。