在办公桌上放一张照片或纪念品。

Keep a photo or memento on your desk.

youdao

游客们能够把其作为礼物或纪念品带回国。

So they can bring back to their home country as gifts or a journey memory.

youdao

我估计某天某个达尔文物品搜集者或纪念品搜集者在参观时发现房间里没别人，就顺手抄走了笔记本。

I'd guess a Darwin collector or souvenir hunter took it one day when they found they were alone in the room.

youdao