VOA慢速英语:A Cool Way to Keep Food From Spoiling

短语讲解：

1. A few degrees can make a big difference when it comes to food storage.

make a difference有影响，有关系
例句：What you have told me may make a difference to my own position. 
你告诉我的一切，可能影响我自己的看法。
when it comes to当提到……；当谈到……；当涉及到……
例句：When it comes to German, I know nothing.
谈到德语,我一窍不通。

2. Farmers lose money when they have to throw away products that they cannot sell quickly.

throw away扔掉
例句：Don't throw your tickets away!
别把车票扔掉!

3. It uses two round containers made of clay.

make of用…做成
例句：The table is made of wood.
桌子是木制的。

4. The space between the two pots is filled with wet sand.

fill with (使)充〔挤〕满
例句：The truck was filled with wood.
卡车上满载木头。

5. Food stored in the smaller pot is kept from spoiling through a simple evaporation process.

keep from阻止; 免于
例句：Urgent business kept me from attending the meeting.
因有急事我不能去参加会议。

6. This award recognizes people trying to develop projects aimed at improving human knowledge and well-being.

aim at (以…)瞄准; 针对, 以…为目标
例句：The visit was aimed at expanding the relations between the two countries.
访问的目的是扩展两国的关系。