These thing can be dangerous if they are not used properly

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• 英语翻译The laboratory is where you carry out your science experiment.There are many things and equipment that can not be found in your normal classroom.These things can be dangerous if they are not used properly,you must always pay attention to the possible dangers when working in the laboratory you may see a poster like the one on the wall in your laboratory.It tells you the safety rules in the laboratory.We shall try our best to prevent accidents from
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• These thing can be dangerous if they are not used properly
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