noun 下载 🔗分享 轮换, 轮值 A short deployed tour for a major combat unit or other grouping of personnel on a continuing operation. Examples : "The army implemented a six-month roulement for the engineering battalion in the disaster relief zone. " 军队对灾区救援的工程营实行了为期六个月的轮换。 military war action unit group 与AI对话词汇游戏阅读练习