Iff
[计] 如果仅仅, 当且仅当, \等价\
🗣️ 情景例句
Can I borrow your notes to study for the exams?
快考试了，我能借你的笔记看看吗？
Where drums beat, laws are silent.
战鼓一打，法律无声。
Is the production line fully automatic?
生产线是全自动的吗？