基金会的官员说：对于这些濒危古迹的威胁来自各个方面，包括自然灾害、年久颓败、人类的忽视、管理不善以及开发不当。
The threats to endangered sites include natural disasters, deterioration caused by age, and human neglect, mismanagement and inappropriate development, fund officials said.
随着人类对自然的深入开发，破坏自然生态平衡的行为越演越烈。
With the further development of human nature, ACTS of destructing the natural ecological balance are intensified.
人类对大自然的开发不是无限的。
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