I step back, put the gas nozzle and hose between my body and hers, press the gas lever.
我向后退了退,把油龙头放在了我的身体和她的身体之间的地方,按了一下油杆。
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This seal is normally made by holding the torch flame stationary, blowing out a hole in the main glass body to match a second tube (hose connection in this example).