Application of atrium is one of the effective ways to solve the problem of psychology as the main obstacle in exploitation and utilization of underground space.
地下空间开发利用的主要障碍来自于人们心理方面的问题，中庭的应用就是解决这一难题的一条有效途径。
There are some direct reason causing this problem . The key reasons are as follows: One is disgusting learning (42.8%), another is poverty (22.8%), and the third is the obstacle in learning (11.4%).
引起辍学的直接原因有很多，其中排列于辍学原因前三位的分别是厌学（占42.8％）、经济困难（占22.8％）和学习困难（占11.4％）。
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