a flat object, usually with raised edges, used for carrying food and drinks

She was carrying a tray of drinks. 她端着一托盘饮料。

a flat, open container with raised edges that you put on your desk for keeping papers in

She put the letter in your intray. 她把信放在了你的收文盘里。

I don't know where I put that article - it must be in the bottom of my tray. 我不知道把那篇文章放在哪儿了——肯定是在我的文件盘最下面。