Ventral fin
n. 腹鳍
🧩 词语组成解析
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
Then you select the leader.
然后选们选出指挥。
Love and poverty are hard to hide.
爱和穷难隐瞒。
Because the equipment for adding sound to films had not yet been developed.
因为给电影配音的设备还没有研制出来。