轻型飞机飞行时起落架不一定缩回.The undercarriage on light aircraft does not always retract in flight.男孩看见那条蛇吓得猛地缩回.The boy started back in fear when he saw the snake.但是现在要缩回来当然为时已晚.But it was too late then, of course, to back out....
今天一早，一枚“德尔塔”Ⅱ型火箭在卡纳维拉尔角发射升空。A Delta II rocket was launched from Cape Canaveral early this morning.他们绕过合恩角时，暴风雨已经减弱。The storms had abated by the time they rounded Cape Horn.这块木头的4个角刨过后就变小了。The piece was reduced in size by...