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汉语拼音：tiān dí

自然界中某种动物专门捕食或危害另一种动物，前者就是后者的天敌。例如猫是鼠的天敌，寄生蜂是某些作物害虫的天敌。

1. 天然的仇敌。自然界中某种动物生性捕食或危害另一种动物，前者就是后者的天敌。如猫是鼠的天敌，寄生蜂是某些作物害虫的天敌。

   秦牧 《狼吞虎咽》：“这显然是长期生活在森林荒野，在经常有天敌来攫夺它们的食物的生活环境下养成的生活习惯。”

• Sentinel is instantly on his feet, ready to fight, ready to end the battle.

  御天敌迅速站起，准备迎战，准备结束这场战斗。

• Like a lizard's detachable tail, it was more or less designed to be lost to predators while leaving the animal essentially unharmed.

  这就像蜥蜴可以自断尾巴一样，其作用或多或少是在遇见天敌时断掉，从而实质上保全自己。

• Garuda personifies the sun, as well as'being the enemy of snakes .

  揭路荼赋予太阳以人性化，以及是蛇的天敌。

• Sensory processes must be refined to enable members of one species to detect its own mates or to guard against approaching enemies.

  知觉的过程必须升华让某个物种的成员去发现他们的配偶或是去对抗接近的天敌。

• Unlike in the rest of Canada, the moose has no natural predators on the island, where the native wolf went extinct.

  与加拿大其他地方相比，由于本地狼种灭绝，驼鹿在此毫无天敌。

• The African elephant is the largest living land mammal. It has no natural enemies for there are none large enough to challenge it.

  非洲象是居住在陆地上的最大的哺乳动物。它没有自然天敌，因为没有什么东西能大到对它构。

• Opossums playing dead actually slip into a semi-comatose state, thus removing any excitement of the kill for a predator.

  装死的负鼠实际上是处于一种半昏迷状态，以消除天敌的猎杀的兴奋感。

• Since the disappearance of their natural enemies, these jellyfish "lost" the ancestors to defend their own weapons - the body of toxins.

  由于天敌们的消失，这些水母“遗失”了祖先用以防卫自身的武器——身体内的毒素。

• Since the predators in their new homelands are not adapted to exploit them, they are able to reproduce unchecked.

  因为在新的属地，原有的天敌掠食他们的能力还没有建立，所以这些物种可以毫无节制地繁殖再生。