正式语体是你在教科书、参考书和商务信函中看到的用语。
Formal language is the kind of language you find in textbooks, reference books and in business letters.
英语的语体分为正式语体和非正式的语体。
适用于非正式语体中比较结构的比例量化中的部分结构，在科技语体中使用的比例比较高。
The proportional quantification by comparative structures is commonly used in informal English, but some of structures are used in science and technology English with high proportions.
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