掀开主机高位海底们，封闭低位海底门。
Open the main engine upper sea inlet vingve and close the lower one.
当门打开的时候，刘磊微笑地说到：“您好，我是海底捞送外卖的，”他穿着一套红色的制服,前后各挂着一个红色的箱子，他骑着电单车把火锅放在身后。
He's dressed in a red uniform, with one red box slung over his back, one on his front. He motored over on his electric bicycle with the hot pot on his back.
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