Black mambas use their incredible speed to escape threats, not to hunt prey.
黑曼巴用它们闪电般的速度逃离威胁，而不是用来捕食猎物。
Tang Huo your speed fast enough, I am afraid can not escape to find it.
倘或你的速度足够的快，恐怕也逃脱不了它的寻觅。
At the event horizon, the escape velocity is equal to the speed of light.
在活动视界里，逃逸速度等于光速。
At the event horizon, the escape velocity is equal to the speed of light.
在活动视界里，逃逸速度等于光速。
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