人类崇尚大气，但居住环境偏小；人类充满无限远景，但是安全只限于个体熟知范围和附近环境。
Human beings admire the large but inhabit the small, they have unlimited perspectives but their security is in the familiar and the nearby.
酸雨是在大气环境发生变化后引起的环境污染之一，其特征是分布范围广，作用时间长。
With a vast range of distribution and long-term effects, acid rain is one of environmental pollutions caused by atmospheric changes.
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