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
This has been a hard course for me.
这门课对于我来说很难。
Mr. Smith is a politician.He's running for election as governor.
史密斯先生是竞选州长的一名政治家。
Where is Lucy's coat?
露茜的外衣在哪里？