名词
中文翻译：半世纪纪念的
同义词：
['centennial', 'jubilee']
例句：
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1.The city held a centennial celebration to commemorate its founding.
该城市举办了一场庆祝成立一百周年的活动。
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2.The jubilee year marked the end of the Great Depression.
这个庆典之年标志着大萧条的结束。
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3. The centennial anniversary of the signing of the Declaration of Independence is celebrated annually.
独立宣言签署一百周年纪念日每年都会庆祝。