Positive aileron deflection produces an anti - clockwise moment about the X axis.正的副翼偏转角产生绕X轴的负方向力矩.They sparred for a moment, on the brink of a full fight.他们互相推搡了一会儿，眼看就要大打出手了。The tanker began spilling oil the moment he...
The water in the irrigating ditch was well up.灌溉渠里涨满了水.The ditch was so broad that no animal can hop it.没有动物能跃过这么宽的一条沟。A ditch diverted water from the rill into the fields.一条沟渠把水从河里引向田间.The carriage upset and we were all...
I was at the greengrocer's.我在蔬菜水果店里.I must go to the greengrocer's.我还得到蔬菜水果店去一下.The greengrocer said: " why do you steal my carrot? "蔬菜水果商说: “ 你为什么偷我的胡萝卜? ”...