水箱和屋顶都需要敷设严密的保温层。Water tanks should be well lagged and the roof well insulated.从防守高度严密的监狱的集体越狱a mass breakout from a top security prison他那论证的精确严密the nicety of his argument...
包括母公司在内，每个单位都有自己的地方管理层。Each unit including the parent company has its own, local management.一厘米可以无穷尽地分成更小的单位。A centimeter can be infinitely divided into smaller units.单位餐厅以前从没供应过像现在这样健康的饭菜。Workplace canteens are offering...