seal

We saw a colony of seals sunbathing on the ice during our Arctic cruise.

(Chinese) 在我们的北极航行中，我们看到一群海豹在冰上晒太阳。

Seals are excellent swimmers and can stay underwater for long periods to hunt fish.

(Chinese) 海豹是出色的游泳者，可以长时间待在水下捕鱼。

Make sure you seal the plastic bag tightly to keep the cookies fresh and crunchy.

(Chinese) 务必把塑料袋封紧，以保持饼干新鲜脆爽。

Workers had to seal the cracks in the basement walls to prevent water leaks.

(Chinese) 工人不得不密封地下室墙壁的裂缝以防止漏水。