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If a animal can't give birth to enough generation ,they would extinct.
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一个动物物种如果不能在每一代生育足够数量的后代,那它就要灭绝. |
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If a animal species can't procreate enough offspring in every generation,it will disappear.
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一个动物物种如果不能在每一代生育足够数量的后代,那它就要灭绝. |
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If a baby has a tendency of putting objects in his mouth, gently pull his hands away and say “No” and focus his attention elsewhere.
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当小婴儿不断在口中放入不应放入的物品时，父母可轻轻拉开他的手，对他说「不」，再分散其注意力。 |
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If a ball stops rolling while a robot is moving ,or a ball does not rebound when rolled into a robot, it is a good indication that the ball is trapped.
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机器人移动时球停止滚动，或是球滚动撞到机器人身体时没有回弹，这就说明球是被圈住的。 |
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If a barge were rotated 90 degrees it still would present the same profile but would generate less beneficial hydrostatic forces.
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如果将驳船倾转90度，其仍然呈现出一样的图形，但是会产生一些有利的流体力学的力。 |
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If a beaver needed dental work, where would it go?
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如果一只海狸需要补牙，那么它应该去找谁呢？ |
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If a big fat man creeps in some night and stuffs you in a bag, don't worry, I told Santa that I want you for Christmas.
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如果有一个大胖子某晚爬进你家把你塞进一个袋子里，别担心，是我告诉圣诞老人我想与你共度圣诞。 |
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If a bill of lading has already been issued, it shall be returned by the shipper to the carrier.
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已经签发提单的，托运人应当将提单退还承运人。 |
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If a bird, flying at 25mph, leaves from Los Angeles at the same time as the train and flies back and forth between the two trains until they collide, how far will the bird have traveled?
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如果一只每小时飞行25英里的鸟同时离开洛杉矶，在两列火车之间往返飞行，请问当两列火车相遇时，鸟飞了多远？ |
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If a body is acted upon by a number of forces and still remains motionless, the body is said to be in equilibrium.
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如果一个物体受到几个力的作用而仍然保持静止，那么该物体处于平衡状态。 |
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If a bond's contract rate exceeds the market rate, the bond sells at a premium.
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如果债券的约定利率超过市场利率，债权溢价销售。 |
