论文部分内容阅读
对很多穷人来说,买不起冰箱的他们迫切需要找到一个冷藏食物的好办法。1995年的一项发明——“罐中罐储藏/冷却系统”可以说给这些人带来了巨大益处。那么这项发明到底是怎样的呢?A few degrees can make a big difference when it comes to food storage.Foods can go bad if they get too warm.But for many of the world’s poor.finding a good way to keep food cool is difficult.Refrigerators are costly and they need electricity.
For many poor people, they can not afford the refrigerator and there is an urgent need to find a good way to refrigerate the food. One of the inventions of 1995 - the “tank canister storage / cooling system” - can be said to have brought huge benefits to these people. So what’s this invention like? A few degrees can make a big difference when it comes to food storage.Foods can go bad if they get too warm.But for many of the world’s poor.finding a good way to keep food cool is difficult.Refrigerators are costly and they need electricity.