They often include a certain amount of digging to test for buried materials at selected points across a landscape.

它们通常包括一定数量的挖掘，以测试在景观中选定的点上的埋藏材料。

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The following applications, like all the articles in our Best of series, are selected by the amount of traffic each article gathered over the course of the year.

以下的这些应用和我们的其它“最给力”系列一样，也是根据每篇文章一年期间获得的流量而评选出来的。

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The foods selected should be healthy and the total amount of calories should not exceed the amount needed to maintain or lose weight.

选择健康的食物，并且卡路里总数不应该超过维持日常生活所需要的量。

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Hundreds of dogs are tested each year for training, but only a small amount get selected.

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Each gift was selected for its recipient, and each met the predetermined amount we had planned to spend.

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With a tax, the government decides the amount of the tax and hopes that the level selected meets a particular objective.

WSJ: Should There Be a Price on Carbon?