We have to clean the grill before we start a fire.
在生火我们必须把烤架清理干净。
Cut off the electricity, gas, and put off the fire and clean up the field before the last shift is off duty.
末班下班前必须切断电源、气源、熄灭火种、清理场地。
We have to clean the grill before we start a fire.
在生火前我们必须把烤架清理干净。
Oil removal for kind of ship turbines, Clean and maintenance, Fire-fighting at emergency.
各种船舶轮机间除油，去污清洁保养，应急消防救火。
Oil removal for kind of ship turbines, Clean and maintenance, Fire-fighting at emergency.
各种船舶轮机间除油，去污清洁保养，应急消防救火。
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