An sk_buff contains packet data and also state data that cover multiple layers of the protocol stack.

sk_buff中包含了报文数据，以及涉及协议栈中多个层次的状态数据。

youdao

All right. The rules, though, are, they can only move one disk at a time, and they can never cover up a smaller disk with a larger disk. OK. Otherwise you'd just move the whole darn stack, OK?

好，规则是，他们只能一次挪动一个盘子，并且不能把大盘子放在小盘子上，不这样的话你就直接，把这一堆盘子都挪过来了对不对？

youdao

The technologies include Cover Flow, which lets users flip through album covers and other content as if through a stack of cards;

技术涉及封面浏览（Cover Flow），它让用户像穿梭于一堆纸牌一样在专辑封面和其他内容之间跳转；

youdao