Metacode
[计] 元代码
🗣️ 情景例句
We've been driving for hours with no gas station in sight.
我们开车开了好久也没有看到一个加油站。
He can't decide what to do.
他不能决定做什么。
How long has Kate been at her school?
凯特进校学习有多长时间了？