Critical region
[计] 临界区
🧩 词语组成解析
🗣️ 情景例句
Did you go to Michigan too, Grandpa?
爷爷，你也上Michigan吗？
My brother has a bad headache.
我的兄弟患严重的头疼。
It suddenly dawned on me that this express was not roaring down the line at ninety miles an hour, but barely chugging along at thirty.
我突然感到这趟快车并没以时速90英里的速度呼啸前进，而是卟哧卟哧地向前爬行，时速仅30英里。