Conditionla macroexpansion
[计] 条件宏扩展
🧩 词语组成解析
[计] 宏指令扩展
🗣️ 情景例句
How do you tie it?
你怎么打的？
Go three blocks and make a right. It's right there.
过3个街区，然后往右拐。那里就有个邮局。
The crowd began to shout, but the drunk was unaware of the danger.
人们开始大叫起来，但醉汉却没有意识到危险。