看点：外星人入侵洛杉矶，陆战队员们，可全指着你们这些人民子弟兵了啊！
没有比1973年那次采用全自愿兵的变化更大的了。
No change was bigger than the adoption of an all-volunteer force in 1973.
青年士兵消化性溃疡发病多见于<2年兵龄、北方籍入伍、全训单位的士兵；
The attack of peptic ulcer is more common among the young soldiers who are from the north area of China and have been in the army for less than 2 years.
青年士兵消化性溃疡发病多见于<2年兵龄、北方籍入伍、全训单位的士兵；
The attack of peptic ulcer is more common among the young soldiers who are from the north area of China and have been in the army for less than 2 years.
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