Compressing data files by removing empty database pages .

通过删除空数据库页压缩数据文件。

That 's slowly compressing his spinal cord .

血块正慢慢挤压他的脊髓。

A recurring theme of the book is the complexity of building a modern aviation infrastructure and culture in china , compressing 100 years of aviation development into a fraction of that time .

《华尔街日报》：这本书反复出现的主题是在中国建设现代航空基础设施和文化的复杂性，将100年的航空发展史浓缩成一小部分。

As zeta ophiuchi moves , its powerful radiation is compressing the gas and dust in its path , creating a bow shock that shines in infrared .

随着蛇夫座截塔星的移动，沿途中的气体和尘埃正在受到其强烈辐射的压缩，产生了一个在红外线波长下闪亮的弓形激波。

Supernova remnants play an important role in stellar evolution by enriching space with heavy elements , and triggering new star formation by compressing interstellar gas .

超新星残骸以重元素填充宇宙空间，压缩星际气体促进新恒星的形成，因而在星体演化过程中扮演重要角色。