他现在坐在那里时,面前总是放着一把出鞘的弯刀.He sits with a drawn cutlass.木屋正中间则并排放着弯刀.In the middle, the cutlasses lay ranged.他大吼一声, 将他的弯刀举过头顶, 刀子在阳光下闪闪发光.He roared aloud, and his hanger went up above his head, flashing in the sunlight....
旋转的陀螺正在失去动量.The spinning top was losing momentum.下落的物体落下时动量增加.A falling object gains momentum as it falls.雷达 、 光和其它形式的电磁波将其动量和能量通过空间输送出去.Radar, light, and other electromagnetic waves transfer momentum and energy through ...