英语口语之stock up

        stock up 囤货
       
        It means to buy a lot of a particular thing, in case you cannot get it later, or because it might be more expensive later.
       
        eg: When there's a storm coming we always stock up on food and candles.
       
        Note:
       
        stock up的意思是特意大量购买某种东西，以备不时之需或者以免将来价格增高。
       
        例：我们经常储存大量食品和蜡烛以防暴风雨来临。