what can you do and what can not you do in your school lab

what can you do and what can not you do in your school lab

题目
what can you do and what can not you do in your school lab
答案
no smoking.不许吸烟.
no photoes.不许拍照.
don't speak aloud.不许大声喧哗.
don't touch the valuables.禁止触摸贵重物品
handle with care.小心轻放.
wear a lab coat.请穿实验装.
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