有些计算机一秒钟能完成超过十亿次运算。

Some computers can perform over a billion computation a second.

youdao

您可以针对文字执行一次运算：将文字串连或将字串连结在一起。

You can perform one operation on text: concatenation, or the linking together of strings.

youdao

一纳秒就是10的9次方分之一秒，而这个电脑一秒可以做2G次运算。

Now, the nanosecond is what, 10 to the minus 9 seconds.

youdao

So, again, there could be constants in here, but just to give you a sense of this.

但是这只是让大家去有个印象，如果我一秒钟运算十亿次。

麻省理工公开课 - 计算机科学及编程导论课程节选

Let's suppose n is 1000, and we're running at nanosecond speed.

假入我们一秒钟运算十亿次，我们已经看过了对数级，线性增长的。

麻省理工公开课 - 计算机科学及编程导论课程节选

So each time through the loop, I'm doing three steps. Three basic operations.

因此每次运行这个循环，我做了三次基本运算。

麻省理工公开课 - 计算机科学及编程导论课程节选