Simple quad
[电] 单线组
🧩 词语组成解析
quad
[kwɔd]
n. 四倍;空铅;（大学的）四周有建筑物围绕的方院;四胞胎之一;
vt. 在…填补空铅;
🗣️ 情景例句
I can see that you've done this before.
我发觉你曾干过此事。
The young man had been well aware of her presence at the party.
那个年轻人早已注意到她在宴会上。
Oh? Is there some trouble?
哦，有什么问题吗？