一般说来，有服务人员和一些收费意味着这些设施会有清洁。
Generally, the presence of an attendant and a fee means the facilities will be relatively clean.
服务人员加满油箱，清洁挡风玻璃，把轮胎打一些气。
The attendants fill the tank, clean the windscreen, and add some air to the tires.
服务人员加满油箱，清洁挡风玻璃，把轮胎打一些气。
The attendants fill the tank, clean the windscreen, and add some air to the tires.
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