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Electricity and gas supply must be turned off before leaving the laboratory.
离不开实验室前还要断电和关上煤气等。
youdao
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Bear in mind to switch off all gas, water and electricity supply.
实验完毕后，应关掉煤气、水喉及电掣等。
youdao
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Bear in mind to switch off all gas, water and electricity supply.
实验完毕后，应关掉煤气、水喉及电掣等。
youdao