Assume a comfortable position sitting down or lying on your back.

假象一个舒适的位置，坐下或者靠着。

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Then, back to the child was lying down, then shielding outdoor the important experiment.

接着，病童被背到屏蔽室外躺下，接着进行下一步重要的实验。

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Then, back to the child was lying down, then shielding outdoor the important experiment.

接着，病童被背到屏蔽室外躺下，接着进行下一步重要的实验。

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