Ep005 — Eight Water Bottles, Zero Glasses of Water

买了八个杯子，每天喝水量没变 Word Power： • stay hydrated — drink enough water during the day • water bottle — a bottle you carry around with water in it • refill — fill something up again • sip — drink a little bit at a time • track — write down or record something over time • habit — something you do regularly, often without thinking • reminder — a small note or message that tells you to do something • lukewarm — a temperature that is not hot and not cold