买一个水龙头过滤器，这样你就不用买那些想要控制我们饮用水供应的大企业生产的瓶装水。
Buy a filter for your tap water so you don't need to buy bottled water from a conglomerate eager to control our water supply.
携带一支带有内置过滤器的水瓶，你可以在通过安检之后在饮用水龙头处灌满它。这样既省钱又可以让你随时补充水分并且很健康。
Bring a water bottle with a built-in filter to fill up at a drinking fountain after going through security. It saves money and keeps you hydrated and healthy.
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