Ifdef
n. 如果定义了
🗣️ 情景例句
I see. By the way, how many people are working in your factory now?
哦，我知道了。顺便问一下，现在贵厂有多少在职职工？
The fox is known by his brush.
狐狸只因尾巴大，所以人人认识他。
I found him seated on the bench.
我发现他在椅子上坐着