规范
word A2- norm
- standard
- specification
- regulation
- rule
- within the rules
- to fix rules
- to regulate
- to specify
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From the library
古人长期习惯于在狭长的竹简上从上到下垂直书写，这种物理层面上的书写规范或许也深刻影响了底层语言的演变。
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