Every application installed on your computer decreases the free hard disk space and reduces system's performance.
在您的计算机上安装的每个应用程序降低了可用硬盘空间，降低系统的性能。
If you have a newer-style 64-bit PC, which can use more memory, you'll need at least two gigabytes of memory and 20 gigabytes of free hard disk space.
如果你有一个更新款的64位电脑（这种电脑可以利用更多的内存），你将需要至少2G的内存和20G的可用硬盘空间。
The disk Cleanup tool helps you free up space on your hard disk.
磁盘清理工具可以帮助您释放硬盘上的空间。
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