柯林斯英汉双解大词典
boulder /ˈbəʊldə/
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1.
N-COUNT A boulder is a large rounded rock. 圆形巨石
例：It is thought that the train hit a boulder that had fallen down a cliff on to the track.
人们认为这列火车撞到了从悬崖滚到铁轨上的大圆石。
双语例句原声例句权威例句
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Boulder was one of the first cities in the nation to enforce a ban on smoking.
博尔德是该国率先施行禁烟令的城市之一。
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Given enough warning, it should be possible to push a threatening boulder out of the way.
如果予以足够的警示，就有可能把一块有威胁性的巨石推开。
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Once you have started the boulder rolling, it develops momentum, which is defined by its mass and velocity.
一旦你开始让巨石滚动，巨石就会产生动量，这是由其质量和速度决定的。
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The workers were provided with medical care and two emergency vehicles to take them to a new hospital in Boulder City.
VOA: special.2009.08.12
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The scientists work for the National Snow and Ice Data Center at the University of Colorado in Boulder.
VOA: special.2009.10.27
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The scientists work for the American space agency and the National Snow and Ice Data Center in Boulder,Colorado.
VOA: special.2009.05.05
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