Compression-stystem of refrigeration

compression [kəm'prɛʃən]

n. 压缩，压紧，浓缩，紧缩;加压，压抑;（表现的）简练;应压试验;

com全部+press挤压+ion名词后缀→ 全部挤压 → 压缩，紧缩

of [əv]

prep. 关于;属于…的;由…制成; aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];

refrigeration [riˌfridʒə'reiʃən]

n. 冷藏，冷冻;

From ...?

打来的人是……

How many sisters and brothers do you have?

你有几个姊妹和兄弟？

The only way that they can preserve their history is to recount it as sagas -- legends handed down from one generation of another.These legends are useful because they can tell us something about migrations of people who lived long ago, but none could wri

他们保存历史的唯一办法是将历史当作传说讲述，由讲述人一代接一代地将史实描述为传奇故事口传下来。