这里没有人工监督，但会有一名服务员在现场接受现金，并向新用户介绍系统。
There is no human supervision, but an attendant will be on hand to accept cash and explain the system to newly users.
4月20日，马里兰州一喜莱登酒店服务员在酒店发现一对夫妻和两个女儿被杀（凶手在现场自杀），又一起自杀式谋杀案（murder--suicide）的牺牲者。
And on April 20, employees of a Sheraton Hotel in Maryland found the bodies of a husband and wife and two daughters, victims of another apparent murder-suicide.
当烟雾超过一定浓度时，会自动示警。保安员或服务员将迅速赶往现场处理。
As soon as the density of smoke exceeds a certain standard, it will alarm automatically and the staff will get to the spot at once.
当烟雾超过一定浓度时，会自动示警。保安员或服务员将迅速赶往现场处理。
As soon as the density of smoke exceeds a certain standard, it will alarm automatically and the staff will get to the spot at once.
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