Ifdef
n. 如果定义了
🗣️ 情景例句
I think we're having communication problems again.
我想我们又遇到语言沟通的问题了。
How many passengers were on the train?
在火车上有多少旅客？
Thank you .It was very nice of you to help me.
谢谢你帮我，你真好。