当英雄出现在大厅时，学生们感到很幸福。的翻译：When the hero appears in the Hall, the students felt very happy. 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

When the hero in the hall, the students feel very happy.

When the hero appears in the Hall, the students felt very happy.

When the hero appears when the hall, the students feel very happily.

When the hero appeared at the lobby, the students are happy.

When the hero appears in the Hall, the students felt very happy.