forward motion

工作进程
移动，前进运动

同：	[n.] advance, advancement, onward motion, procession

Caution: Do not cross in front of bus,passengers must not stand forward white line while bus is in motion
当心:请勿从汽车前面横穿,汽车发动时乘客请站在白线以内收藏
Thus it came about that the forward motion of progressivism came to a halt in the early uncertain months of 1939
这样，在一九三九年不稳定的头几个月，进步运动的前进步伐停止了。收藏
A hinged or pivoted device adapted to fit into a notch of a ratchet wheel to impart forward motion or prevent backward motion.
掣爪，棘爪一种枢轴或转轴器械，能与齿轮缺口或齿间吻合来前进或防止后移收藏
It relies on the craft's forward motion to draw in air and on a specially shaped intake passage to compress the air for combustion.
它靠飞行器的向前运动吸进空气，用特殊形状的进气信道把空气压缩，供燃烧之用。收藏

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