GRUB 2 can directly boot all these same kernels plus XNU (the Mac OS X and Darwin kernel).

GRUB 2也能启动这些内核，以及XNU (Mac OS X和Darwin内核)。

youdao

Because RPR is a layer 2 MAC-based technology, it can operate over multiple physical layers, including SONET.

由于RPR是第二层基于MAC的技术，所以它能在多个物理层上工作，包括SONET。

youdao

The present invention relates to a method for protecting a network against a security attack from an user, and in particular, for a layer 2 switch, against a MAC flooding attack.

本发明涉及一种用于保护网络免于来自用户的安全攻击并且尤其是对于第2层交换机而言免于MAC洪流攻击的方法。

youdao

It had narrowly avoided bankruptcy, and Steve Jobs' return as CEO a few years earlier was turning the company around, but the market share of its products -- then almost exclusively Mac computers -- was dismal, at about 2% worldwide.

CNN: Half of U.S. households own at least one Apple product

But Edmund was beaten 6-4 7-6 (7-2) by Mac Styslinger of the United States.

BBC: Roger Federer & Novak Djokovic progress at Aussie Open

Valve has released its long-awaited Portal 2 game for Mac, PC, PS3 and Xbox.

FORBES: Morning Tech Wrap: Apple, Portal 2, Amazon