When in use, the exhaust blower is opened and stench can be discharged through the sucking hole, the passage and the gas outlet.
使用时，打开排风机，臭气通过吸孔、通道、导气管排放掉。
When in use, the exhaust blower is opened and stench can be discharged through the sucking hole, the passage and the gas outlet.
使用时，打开排风机，臭气通过吸孔、通道、导气管排放掉。
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