Slit is an excellent channel for noise transmission, while a natural enemy of noise control.
缝隙是噪音传播的良好通道，是噪音治理的天敌。
Some insects have a natural camouflage which hide them from the attack of their enemy.
有些昆虫有一种天然的保护色可以防止敌人的袭击。
Empathy is the natural enemy of egocentricity, a disease that eats away at our society.
同理心是自我中心的天敌，自我中心是一种病，阻碍我们的社会交往。
Well, English is a "paper tiger". Its natural enemy is adequate practice.
英语是个“纸老虎”，它的敌人是足够的练习。
Well, English is a "paper tiger". Its natural enemy is adequate practice.
英语是个“纸老虎”，它的敌人是足够的练习。
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