小鸡从蛋里孵出来需要21天。

Chickens take 21 days to ___hatch from their eggs.

孩子们偷偷策划了一个惊喜派对来庆祝父母的结婚纪念日。

The children ___hatched a secret plan to throw a surprise party for their parents' anniversary.

船员们关上甲板上的舱口以防海水进入。

The sailors closed the ___hatches on the deck to prevent seawater from entering.