Don't leave the tap running.
别把水龙头开着白白流水。
You can ask for a chemical analysis of your tap water.
你可以要求给你的自来水做化学分析。
You'll be able to get a taxi outside the station.
在车站外可搭乘出租车。
I think the sensible thing would be to take a taxi home.
我想还是坐出租车回去的好。
She never took a taxi, even though she could afford to.
尽管她坐得起出租汽车，但她从未坐过。