What I mean is, imagine you're in a restaurant, you're having a conversation, there are all kinds of other conversations going on in the restaurant, you want to filter them out, you want to focus on what's important to you.
我的意思就是， 想象你在一个餐厅中， 正在和人交谈， 而餐厅中有很多 各种各样的交谈正在进行着， 你想要从中过滤出信息， 你想要专注于 对你有用的信息。