You should get a new toothbrush every three months.
你应该每三个月换一把新牙刷。
I never remember to pack a toothbrush. At every hotel, I go to the front desk to get a new one.
我老是记不住带牙刷，所以每到一个酒店就得与买新的。
I never remember to pack a toothbrush. At every hotel, I go to the front desk to get a new one.
我老是记不住带牙刷，所以每到一个酒店就得与买新的。
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