生命是变化莫测的，万物实体是极不易掌握的，道运筹的准则是无穷无尽、深奥而不明的。
It is difficult to master the frequently-changing life and entity of all things; the operational rule of Tao is limitless, profound and obscure.
英语词汇的多样，细差距变化，以及句法结构无穷无尽。
The diversity of English words and variations of nuances and sentence structure is nearly infinite.
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