troopn.群；组；军队；大量vi.群集；结队；成群前行troop objects群目标troop off home成群地离开家troop togetherv.集合troops element军旅元素troop rotations部队换防; 部队调防Troops Building队伍建设troop movements军队的调动troops movement部队调动troops training部队训练troops rotation部队轮换