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A polar bear may sit for hours at a breathing hole, waiting for a seal to surface.
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一头北极熊会在呼吸口边坐上数个小时等待海豹出来换气。 |
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A polar bear plays on the tundra near Churchill, Manitoba, Canada.
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加拿大中南部马尼托巴湖附近的一只北极熊正在冻土上玩耍。 |
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A polar projection of half or more of the celestial sphere on a chart equipped with an adjustable overlay to show the stars visible at a particular time and place.
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星座一览图天体球的一半或多半在平面图上的极投影图，这种图具有可调节的遮蔽物以显示在给定时刻和位置可见的恒星 |
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A polar-transformed snake for extraction of the contours of elliptic objects is presented.
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摘要提出了转化到极坐标中的蛇模型。 |
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A police blotter.
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警察记录本 |
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A police car drew alongside and signalled to me to stop.
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一辆警车开到我身边示意我停下来。 |
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A police car jogged along on the rough path to the village.
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一辆警车在通向村庄的高低不平的小路上颠簸地行进。 |
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A police car! Why didn't you tell me?
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一辆警车！你为什么不早告诉我呢？ |
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A police court is presided over by a magistrate, who tries the cases without a jury.
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警察法庭重要由地方法官主持，法官审理各种案件，无须陪审团。 |
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A police dashboard camera caught the preteen out for a joyride.
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一个警用仪表盘摄影机记录下了这个未成年人飙车的过程。 |
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A police helicopter circles the bank.
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一架警用直升机在银行外上空盘旋。 |
