The soldiers were ordered to retreat to safer positions behind the lines.
士兵们奉命撤退安全的阵地上去。
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After the first American contingent arrived at the end of June 1917, Pershing and his officers began to implement their training plan, drilling the men behind the lines before gradually introducing them to trench warfare.
1917 年 6 月底, 第一支美国特遣队抵达后, 潘兴和他的军官们开始实施他们的训练计划,在后方对士兵进行训练, 然后逐渐让他们参加堑壕。