Dorsal fin
n. 背鳍
🧩 词语组成解析
dorsal
['dɔrsl]
adj. 背的; 脊的;背部的;背面的;
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's a problem, isn't it?
这确实是个问题，不是吗？
I would like to go to the employment agency for a job.
我要去职业介绍所找一份工作。
The teacher tested us in English.
老师用英文考我们。