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Semicentennial Definition & Meaning - Merriam-Webster
SEMICENTENNIAL Definition & Meaning - Dictionary.com
United States Semiquincentennial - Wikipedia
semicentennial - Wiktionary, the free dictionary
SEMICENTENNIAL definition in American English - Collins Online …
Semicentennial - definition of semicentennial by ... - The Free …
Semicentennial - Definition, Meaning & Synonyms
Semicentennial Definition & Meaning - YourDictionary
semicentennials - Wiktionary, the free dictionary
在"英语"词典里semicentennial}的意思 - educalingo