In a preliminary talk, the teacher introduces them to the material to be covered, but does not "teach" it.

在初步的谈话中，老师向他们介绍要学习的内容，但并没有“教授”。

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Not all risks lend themselves to being covered by insurance. Broadly speaking, the ordinary risks of business and speculation cannot be covered.

并不是所有的风险都适合投保。一般来说，商业和投机的普通风险不包括在内。

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Also, newly joined celebrities do not need to worry about their fame will be covered by elite users, as there is also a section which featured celebrities who just joined the world of Sina Weibo.

而且，新加入的名人不愁其风头被老牌用户盖过，还有一个部分专门推介刚刚加入新浪微博的名人。

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Some are not suitable to be covered as they have already been damaged, either by the debris of the volcano, or when they were unearthed.

BBC: Pompeii's frozen victims on display

Comparing the anti-obesity drug to treatments for other chronic diseases, Troupin said patients will probably need to continue taking Qsymia long-term, though the new drug is not expected to be widely covered by health insurance plans.

CNN: FDA approves new diet drug

The authority's leader said on Monday he did not want the county to be covered by a "forest" of wind turbines.

BBC: Wind farm