Iff
[计] 如果仅仅, 当且仅当, \等价\
🗣️ 情景例句
OK, here are the walnuts.
嗯， 核桃在这 。
His presence in the room was not noticed.
没有人注意到他在房间里。
Idealists have objected to the practice of camping, as to the packaged tour,
理想主义者像反对旅行社安排一切的一揽子旅游一样反对露营的作法，