但是,至多在一千二百年前,非洲马里(Mali)的多根(Dogon)部落,就发轫祭奠这颗星,并且知道它的体积,密度,轨道形态体式(椭圆)和它缠绕天狼星运行的周期(四十九个地球年),把这些记载到这个原...
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刺绣工需要把每根丝线分成10多根,甚至30根更小的线。
Embroidery workers need to divide each silk thread into more than 10 or even 30 smaller threads.
据官方通讯社报道,俄罗斯当局已经找到了170多根金条,每根重20公斤。
According to the official news agency, Russian authorities have recovered more than 170 gold bars weighing 20 kilograms each.
It's not the most interesting physical object in the world, but it's a whole lot more interesting than a piece of chalk.
它虽不是这个世界上最吸引人的物理对象,但它能干的事比一根粉笔能干的有趣多了
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