Prenex normal
[计] 前束范式
🧩 词语组成解析
[计] 前束的
🗣️ 情景例句
There's no end to the paperwork I have on my desk.
我桌上的工作永远没个完。
He has lived here for a year.
他在这里住了一年了。[表示持续到现在的行为]
Oh, cheer up!perhaps we didn't to do badly.
啊，别灰心！或许我们考得还不太糟。