The underground spaces stay cool in summer and reduce the need for air conditioning.

夏天的地下空间很凉爽，降低了对空调的需求。

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Based on that, summarize main points of underground space design, search the characteristic and tendency of design building underground Spaces.

并在此基础上，总结地下空间的设计要点，探索当今建筑地下空间开发利用的主要特点和设计趋势。

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To allow the lighting of these underground spaces, two large skylights allow incoming daylight, while on the surface these two skylights become in seats.

为了使自然光能到达地下，两个大大的天窗被加入其中，而从上面看它们则能充当座椅。

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Zhao further envisions going even deeper, to enable underground spaces with multiple levels.

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"Planning is important...because underground spaces you can't remove afterwards, " says Zhao.

CNN: Why Singapore is putting its oil back into the ground

Though it has been seven days since anyone was pulled alive from the rubble, Angeli, Steelman and the other underground rescue workers are saying there are enough open spaces, with food and water, for people to survive.

CNN: workers