1. Air can be changed to a liquid by cooling and compress it.
   空气可以通过冷却和压缩的办法把它变为液体
2. Compression:The act or process of compressing.
   压缩:压缩的过程或行为.
3. Liquefied compressed gases come in a variety of containers.
   液化压缩气体可以装在多种容器里。
4. A cold compress often alleviates pain.
   冷敷常会减轻疼痛。
5. Wood cuttings and sawdust can be compressed into boards.
   木屑和锯末可压制成板。

　1个名词解释