Furthermore, in order to avoid clock skew familiar in high-speed sequential logic circuits, negative clock skew system is used in clock routeway and buffers are placed in clock-tree.

此外，为了避免高速时序电路中常见的时钟偏差，时钟通道采用负时钟偏差系统，并在时钟树中放置了缓冲器。

youdao

First of all, negative time should not bother anybody; t=0 is when I set the clock, I measured time forward, but yesterday would be t = -1 day, right?

首先,负的时间对我们不存在任何干扰,t=0使我们设定的初始时间,我是用顺序计时,所以昨天就可以记为-1天,对吗

耶鲁公开课 - 基础物理课程节选

They successfully employed this approach during the primary season, running negative ads around the clock in key states.

FORBES: Money Is The Critical Issue In This Campaign