Flippers
n. （用于游泳或潜水的）脚蹼, 鸭脚板( flipper的复数形式 ); 鸭掌
🗣️ 情景例句
We will also need a letter of recommendation.
我们还要求一封推荐函。
Karl must concentrate on his work.
卡尔必须集中精力于自己的工作。
They are too high. Be careful, Jim! It's dangerous.
它们太高了，小心，吉姆！那很危险。