She unconsciously moved back a pace or two.
她下意识地
了一两步。
缩She unconsciously moved back a pace or two.
她下意识地了一两步。
The policeman directed the crowd to move back for safety.
为了安全那个警察命令人群往。
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
挂弹钩的实
计算，计算结果与试验结果基本相符。
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我们指正。
