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1.door to door 挨家挨户
例句：The trade goes round the village selling things from door to door.
那个商人在全村挨家挨户地推销商品。
2.raffle ticket 彩券
例句：The money is raised by the sale of raffle ticket.
竞选活动的资金主要是通过自愿捐助筹集的。
3.raise funds 募集资金
例句：They are trying by all possible means to raise funds.
他们正想方设法地筹集资金。
4.knock on 敲门；撞上
例句：While he was half asleep, he seemed to hear a knock on the door.
半梦半醒中，他仿佛听到有人在敲门。
