对于城市，城市建设用地规模和结构是同一事物的两个方面，二者缺一不可。
To a city, urban land-use scale and structure are two aspects of one thing, and both are necessity.
阴阳既可以代表两种相互对立的事物或势力，也可以代表同一事物内部所存在的相互对立的两个方面。
Yin and Yang represent not only the two inter-opposite things or forces, but also the two inter-opposite aspects existing within one object.
阴阳既可以代表两种相互对立的事物或势力，也可以代表同一事物内部所存在的相互对立的两个方面。
Yin and Yang represent not only the two inter-opposite things or forces, but also the two inter-opposite aspects existing within one object.
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