First, I'll talk about the User Control sample code.

首先，我将谈谈用户控件示例代码。

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Why do we need yet another wizard control sample, you might ask.

为什么我们需要另外的向导控制示例中，您可能会问。

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Don't forget to have some reagent blanks and include a Quality Control sample.

不要忘记有一些空白的样品和质量控制样品。

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One is in the U.S.at the Centers for Disease Control, where there is a sample of variola, which is kept, you know, frozen on ice in a heavily guarded facility.

一个在美国的疾病控制中心,那有一支天花病毒的样本,冰冻后置于重重保护之下

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As a control sample, the scientists gave the same puzzles to forty-eight students working by themselves.

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At the same time it was activated in space, a control sample was activated here on Earth.

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After comparing the performance of a maquiladora-using firm with that of a control sample, the authors found no evidence of net gain in the use of a maquiladora.

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