fins造句

Fins are a feature specific to fish.
鱼鳍是鱼类特有的特征.

He could see their wide, flattened, shovel - pointed heads now and their white tipped wide pectoral fins.
他这时看得见它们那又宽又扁的铲子形的头,和尖端呈白色的宽阔的胸鳍.

They were flapping their bat - like fins before dropping back into the water with a terrific splash.
它们拍打着蝙蝠般的鳍,然后随着令人恐惧的溅水声掉进了水中.