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可持续性已不再是一种选择,而是任何希望长期繁荣的企业的必需品。
The deepest theorems in mathematics often have the simplest statements.
The meaning of a word is its use in the language.
心灵是一个相互关联过程的动态系统。
Modern quarrying requires us to be geologists, ecologists, and community diplomats simultaneously.