名词
中文翻译：七姐妹
同义词：
['seven sisters', "seven maidens例句：1. The septennial celebration of the family's centennial is a time for reunion and reflection.（这个家庭庆祝成立一百周年的庆典是团聚和反思的时刻。）"]
例句：
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1. The septennial celebration of the family's centennial is a time for reunion and reflection.
这个家庭庆祝成立一百周年的庆典是团聚和反思的时刻。
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2. The septennial wedding of the couple was a joyous occasion filled with love and laughter.
这对夫妇的七周年纪念婚礼充满了爱与欢笑。
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3.The septennial milestone of their marriage marked a new chapter in their lives together.
他们婚姻的七周年纪念标志着他们共同生活新篇章的开始。