实验室应保持清洁、整齐。不准随地吐痰，不准吸烟，废纸废渣应倒入指定点，实验结束后应由值日生打扫卫生。

Keep the lab clean and don't spit in the lab. No smoking. The rubbish should put into the permitted place. Clean the lab after the experiment.

youdao

实验室应保持清洁、整齐。不准随地吐痰，不准吸烟，废纸废渣应倒入指定点，实验结束后应由值日生打扫卫生。

Keep the lab clean and don't spit in the lab. No smoking. The rubbish should put into the permitted place. Clean the lab after the experiment.

youdao