第21

1.
21st
英语数字的表达 ... nine-hundred 900 nine-hundredth 第900 21st 第21 32nd 第32 ...
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Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard