natural enemy
Their natural predators have been killed off.
它们的天敌被全部杀死。
—— 柯林斯例句He still believes that labor has to be the natural, mortal enemy of the manager.
他仍然相信,劳工必定是经理的天敌和死敌。
—— 辞典例句A zebra´s stripes help this animal hide from its enemies.
斑马条纹有助它们避开天敌。
—— 给力词典精选Our herds have lots of predators like hyenas, lions, and leopards.
我们的牧群有许多天敌,如鬛狗 、 狮子和美洲豹。
—— 给力词典精选Fig .5. Qatar issued 7 beetle stamps in a set of 20 insect stamps in 1998.
图5。卡塔尔共发行了7张甲虫邮票。 1998年发行的一套20张的昆虫邮票中,天敌昆虫、粉昆虫、业害虫、生昆虫、赏昆虫等全包罗其中。
—— 给力词典精选