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。