1. She unconsciously moved back a pace or two.
   她下意识地向后退了一两步。
2. The policeman directed the crowd to move back for safety.
   为了安全那个警察命令人群往后退。
3. The process beginnng from powder burning to the ejection pistons pushing out the bomb and its moving back was analyzed applying classical interior ballistics and gasdynamics theory.
   给出了对某型号挂弹钩的实例计算，计算结果与试验结果基本相符。
4. I sit down and use a campout approach.My wife uses a scowering approach.She's here and there darting from this row to that row.Afina is move back and forth between us.
   又把一部分草莓打烂， 加了牛奶和糖，当既开车出去买了作冰棒的工置， 一会儿就能吃到我的自制 草莓冰棒了.晚上我们去吃了海鲜自助餐。

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