Quadripole
[计] 四端网络, 四端电路
🗣️ 情景例句
I gave that idea up a long time ago.
我很久以前就放弃了那个想法了。
Would he have seen you if you hadn't waved to him?
如果你没向他招手他会看见你吗？
Then he lent me a book.
之后还借给我一本书。