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。

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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。

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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。

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Instead of going into a hole on the green, discs are thrown into a raised metal basket that looks a bit like a trash bin covered in chains.

VOA: standard.2010.08.03

But most of the people focused on Palestinian identity, which the conflict maybe covered, or in certain cases, there is.

但大多数人关注的是巴勒斯坦身份，巴以冲突可能包括这个层面，在一些例子中，确实是。

普林斯顿公开课 - 人性课程节选

It's a problem, as you'll see, designed to give you some practice at dealing with some of the, dare I say, more theoretical concepts we've covered in class.

这种问题会让你在处理我们,课堂上并没有讲到的更多,理论概念这方面上有更多实践,这种问题就像算法复杂度一样。

麻省理工公开课 - 计算机科学及编程导论课程节选

And you know, in our case, in covered call terminology, when you have volatile, that means more income for us.

FORBES: Capture Gains with ETFs and Covered Calls

Cue bipartisan congressional opposition and industry scare ads urging customers to call their representatives to avert premium hikes and cuts in covered services.

FORBES: No Sequester for Corporations

Other sound but basic advice is for people to use sand to fill pools where mosquitoes might breed, to empty and bury any containers that might fill with rain, and to store water for drinking, cooking and washing in covered containers.

ECONOMIST: A new way of predicting a malaria epidemic months in advance