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Representation theory provides the language in which many number-theoretic phenomena can be expressed.

Sustainable development is not an option, but a necessity for the coal sector.

林業實踐的創新是平衡經濟增長和環境保護的關鍵。

The only thing that makes life possible is permanent, intolerable uncertainty; not knowing what comes next.

效法的人如果不仁義，我們就不可以效法他。治理國家，管理人民應當要以人為本，用仁義管理世俗。