They crossed the broad plains of the West in covered wagons.
他们乘着大篷车穿过了辽阔的西部平原。
Combustible scraps, debris and waste materials (e. g. oily rags) should be stored in covered metal containers and removed from the work site promptly.
易燃的废屑、碎料和废弃物料（例如油抹布）须存放在有盖的金属容器里，并即时搬离工作场地。
The process is simple, high in extracting efficiency, small in covered area, and low in cost, and can raise the antioxidant performance of oil product without producing secondary pollution.
本发明脱酚方法简单，萃取效率高，占地面积小，成本低，且可提高油品的抗氧化性能，不造成二次污染。
Karst collapse is the most prominent geological hazard in covered karst area.
岩溶塌陷是覆盖型岩溶区最突出的地质灾害问题。
Facts have revealed that vacuum suction is a natural physical phenomenon in covered Karst areas.
许多事实证明，真空吸蚀作用是覆盖型岩溶地区一种自然物理作用。
In nearly all systems it will be necessary to store water in covered tanks between the source and distribution points.
在几乎所有系统里，都必须将水贮存在水源和配给点之间遮盖着的储水池里。
The first white settlers journeyed across America in covered wagons pulled by horses often long lines of them forming wagon trains.
最初的白人定居者乘着马拉的篷车穿越美洲大地，常常形成一行行长长的马车队伍。
The first white settlers journeyed across America in covered wagons pulled by horses often long lines of them forming wagon trains.
最初的白人定居者乘着马拉的篷车穿越美洲大地，常常形成一行行长长的马车队伍。
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