Another reason for much of the complexity in Gecko is the use of XPCOM, a powerful component system.

Gecko过于复杂的另外一个原因是XPCOM，一个强大的组件系统。

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Usage of XPCOM has been decreased in many places over the years, and its resource overhead was reduced by the new cycle collector.

对XPCOM的使用被大大减少，XPCOM对资源的占用通过一个新的循环回收器得到减低。

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You can do that, but you need to use XPCOM to bind to external libraries, and doing that reduces portability — or at least makes things more difficult.

您可以这样做，但是需要使用XPCOM绑定到外部库，而这样会降低可移植性，或者至少增加了移植的难度。

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