Fourth normal form
[计] 第四范式
🧩 词语组成解析
🗣️ 情景例句
Don't stand on ceremony, make yourself at home.
别客气，随便吃。
Do you have any plan for your career?
你对未来有什么计划吗？
Be careful! Don't throw your cigarette out of the window. If you do that, you may start a fire. Put it out in the ashtray.
当心！别把香烟丢到窗外。要是你那样做，会引起火灾的。把它熄灭在烟缸里。