实际测量结果表明，在网络延迟方面，二级时间服务器要优于一级时间服务器。

Practical measurements result shows that secondary time server are better than primary ones from the perspectives of network delay.

youdao

您还需要有CPAN的Time： HiRes模块才能提供处理TouchPad事件的亚秒级时间控制。

You also need the Time: : HiRes module from CPAN to provide subsecond timing control for processing TouchPad events.

youdao

纳秒级时间戳 大部分的文件系统（包括 ext3）都包含有精确到秒的时间戳数据，而 ext4 把精确度提高到了纳秒。

Nanosecond timestamps Most file systems, including ext3, include timestamp data that is accurate to a second. Ext4 extends the accuracy of this data to a nanosecond.

youdao

Wow, OK, maybe not so wow, but this is now constant. This is constant time access. So I can do searching in constant time which is great.

喔，当然，可能没那么,但是现在是常数级了,这是常数时间的访问。

麻省理工公开课 - 计算机科学及编程导论课程节选

All right? It's now something that I can search in constant time. And that's what's going to allow me to keep this thing as being log.

在固定的时间内搜索,这样就可以让时间复杂度保持在对数级,好的，考虑过了这些。

麻省理工公开课 - 计算机科学及编程导论课程节选

That is another way of saying that looking up this thing here is constant.

都是常数级的复杂度,另一种说法就是在这里查找时间是固定的。

麻省理工公开课 - 计算机科学及编程导论课程节选