| 单词 | thirty | 
| 释义 | thirtynoun  thir·ty  ˈthər-tē     plural thirties   1   : a number equal to three times 10   see Table of Numbers   2  thirties  plural  : the numbers 30 to 39    specifically : the years 30 to 39 in a lifetime or century  3   : a sign of completion : end  —usually written 30  wrote thirty on the last page of the story 4   : the second point scored by a side in a game of tennis    thirtieth   ˈthər-tē-əth adjective or noun  thirty adjective   thirty pronoun, plural in construction   thirtyish   ˈthər-tē-ish adjective | 
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