仔细研究这个完整的体系结构图，可能会注意到，其从功能的角度可以划分为三个部分。
If you look carefully at the complete architectural picture, you might notice that from a functional point of view it could be split into three different parts.
关于这个问题的辩论在局部和全球范围两个层面上同时展开：生态系统的一小部分可以小到何种程度仍能维持其完整、丰富的功能，从而可以认为是受到了保护呢？
The discussion is taking place at both the local and global levels How small can a fragment of an ecosystem be and still function in all its richness and thus be considered preserved?
眼睛的完美和复杂性意味着，迄今为止，依然不可能利用人工的方法实现其完整的功能。
The complexity and perfection of the eye has meant that, to date, it's been all but impossible to reproduce its function artificially.
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