昨天大约四百多名学生参加了这个活动。的翻译：Yesterday about more than more than 400 students were involved in this activity. 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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Yesterday about more than more than 400 students were involved in this activity.

Yesterday about more than 400 students participated in this activity.

Yesterday more than 400 students took part in this event.

Yesterday about more than more than 400 students were involved in this activity.