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1·The company is celebrating its golden jubilee.

公司在举行五十周年庆典。《柯林斯英汉双解大词典》

2·My parents are celebrating their golden jubilee.

全国都在庆祝国庆日。

3·Our should academic activities were planned as part of our Golden Jubilee Celebration a year ago.

我们的学校活动是五十年校庆的一部分，计划在明年执行。

4·The Royal couple last visited the University in 1954 to inaugurate the Golden Jubilee celebrations so this is a great honour that they have again chosen to spend time with us.

对于谢菲尔德大学而言这无疑也是一件荣誉的事情，上一次皇族来访本校已经是1954年的事情了。