The old object model not only led to the above-mentioned problems but also led to fundamental problems that prevented implementing some additional features on top of the existing object model.

旧的对象模型不仅仅导致上面提及的问题，而且阻碍了在这个已经存在的对象模型上实现一些附加的特性。

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The old object model not only led to the above-mentioned problems but also led to fundamental problems that prevented implementing some additional features on top of the existing object model.

旧的对象模型不仅仅导致上面提及的问题，而且阻碍了在这个已经存在的对象模型上实现一些附加的特性。

youdao