他们到达那里时，会议已经开始了的翻译：When they arrived there, the meeting has already begun 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

They arrived there, the meeting has begun

When they arrived there, the meeting has already begun

When they arrive there, the conference already started

They arrived there, the Conference has already started

When they arrived there, the meeting has already begun