n. 卵石,圆石;巨砾,冰砾;漂砾
网络 博尔德; 巨砾; 波尔德
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。
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。
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。
Similar measures in California´s Albany, Oakland, San Francisco and Colorado´s Boulder are becoming hot-button issues.
加州奥尔巴尼、奥克兰、旧金山和科罗拉多州博尔德的类似措施正成为热点问题。
As with Sisyphus, the boulder was painstakingly rolled upwards only to tumble back down again in an absurd exercise of futility.
和西西弗斯一样,巨石费力地向上滚动,结果又滚了下来,徒劳无功。