在8点学生会主席宣布晚会开始的翻译：Announced on 8 points by heading the party started 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

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Announced on 8 points by heading the party started

In 8 o'clock student association presidents announced the party starts

The President of the students' union in point 8 announced the start of the evening gala

Announced on 8 points by heading the party started