Iff
[计] 如果仅仅, 当且仅当, \等价\
🗣️ 情景例句
I get your point, but there are other things we have to consider.
我明白你的意思，可是我们还需要考虑其它一些事情。
Man is to man either a god or a wolf.
人与人交往，不是上帝就是狼。
The tragic sinking of this great liner will always be remembered, for she went down on her first voyage with heavy loss of life.
然而，这艘巨轮首航就下沉，造成大批人员死亡。人们将永远记着这艘巨轮的沉没惨剧。