1.propulsion n. 推进;推进力
The nineteenth century witnessed a revolution in ship design and propulsion.
19世纪船舶设计和船舶动力领域发生了重大的变革 。
2.momentum n. 势头;[物] 动量;动力;冲力
The spinning top was losing momentum.
旋转的陀螺正在失去动量 。
3.impart vt. 给予(尤指抽象事物),传授;告知,透露
The carpet imparted an air of elegance to the room.
地毯使房间有了一种优雅的气氛 。
4.standpoint n. 立场;观点
He believes that from a military standpoint, the situation is under control.
他认为从军事角度来看,局势已得到控制 。