有些昆虫有一种天然的保护色可以防止敌人的袭击。
Some insects have a natural camouflage which hide them from the attack of their enemy.
有些动物有一种天然的保护色可以防止敌人的袭击。
Some animals have a natural camouflage which hides them from the attack of their enemies.
城墙是为防御敌人袭击而修建的。
The town walls were built as a defence against enemy attacks.
应用推荐