David Nam submitted this lively shot of youngsters having fun on the roof of two trains.

大卫·纳姆提交了这张充满生机的照片，照片里的年轻人正在两列火车厢顶玩耍。

youdao

David Nam submitted this lively shot of youngsters having fun on the roof of two trains.

大卫·纳姆提交了这张充满生机的照片，照片里的年轻人正在两列火车厢顶玩耍。

youdao