今年是《世界人权宣言》发表50周年，这次会议是为纪念这一重大的日子而召开的。
This year marks the 50th anniversary of the issuing of the Universal Declaration of Human Rights, and this symposium is being held to commemorate this grand occasion.
今年是《世界人权宣言》通过50周年，国际社会正在举行一系列的纪念活动。
This year marks the 50th anniversary of the adoption of the Universal Declaration of Human Rights, and the international community is holding a series of activities in commemoration of the event.
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