S. system. It is named for Isaac Newton, whose second law of motion describes the changes a force can produce in the motion of a body.
它以科学家牛顿的名字命名，牛顿的第二运动定律描述了力所能产生的物体运动状态的改变。
Known only to the Bushmen until the mid 1800's it was named the Tsumeb Mine after the village nearby, which was founded by the Germans.
这里原来只有布须曼人知道，直到19世纪中期德国人在附近建立了村庄，并以此命名。
Known only to the Bushmen until the mid 1800's it was named the Tsumeb Mine after the village nearby, which was founded by the Germans.
这里原来只有布须曼人知道，直到19世纪中期德国人在附近建立了村庄，并以此命名。
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