这是从他被选去计算机实验室协助老师那时候开始的。
It begin when he was selected to help the teachers in the computer laboratories.
在科学实验室时，未经老师许可，不得品尝化学药品。
When you are in the science lab, you mustn't taste chemicals without the teacher's permission.
在实验室中化学老师常把化合物分解为各种成分。
Our chemistry teacher often reduces a compound to its components in lab.
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