Helical fin
[化] 螺旋翅片
🧩 词语组成解析
a. 螺旋状的\\n[电] 螺线
fin
[fin]
n. 鱼鳍;鳍状物;（汽车、飞机、炸弹上的）尾翅;散热片;
vt. 给…装上翅片;切除鳍;
vi. 潜泳;（猛烈地）拍动（鳍）;
🗣️ 情景例句
It was my please.
荣幸之至。
This round table weighs about forty-five pounds.
这张圆桌子重大约45磅。
Well, you know I'm going to England next week for a holiday?
嗯，你知道下周我就要回英国度假吗？