type formation

US

UK

un.标准层

E-C

Web Definition

un.

1.

标准层

Sample Sentence

Definition:

AllAll,标准层标准层

Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical

Source:AllAll,DictionaryDictionary,WebWeb

Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard

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