It's a simple way of switching from an old directory to a new one when the two directory paths have only one difference, such as a single word.
当两个目录路径只有一个区别(比如一个单词不同)时，这个是从旧目录切换到新目录的一种简单方法。
2
Switching parity regarding cores 0 and 1 also seems to make no difference with larger packets.
切换关于核心0和1的奇偶校验看起来也与较大的数据包没有什么不同。
3
A ceiling fan can lower a room's temperature by several degrees. Even something as simple as switching to compact fluorescent light bulbs can make a big difference in electricity bills.