The Algenol bioreactors also produce oxygen as a byproduct and that can be fed into a power plant to burn coal more cleanly.

VOA: standard.2009.09.02

It gives you a lot of expressive convenience, you can write the programs much more cleanly, but most importantly, it's fast.

你可以把一些程序写的更清楚，最重要的是，它的效率非常高。

麻省理工公开课 - 计算机科学及编程导论课程节选

You might think -- and this board is -- and you know what, let's use the computer because it will erase more cleanly than chalk.

你可能会想--这个板子是--你们懂得，让我们使用电脑,因为它能比粉笔擦除地，更干净些。

哈佛公开课 - 计算机科学课程节选

This thing's nice because rather than do "if" and "and and" or "or or" and all of this, you can instead enumerate things a little more cleanly, albeit apparently at the expense of more white space.

这个东西是不错的，因为它不用“if“和“and，and“,或者“or，or“所有的这些，你可以用枚举来更清楚地表达它，虽然表面上它用了更多的空格。

哈佛公开课 - 计算机科学课程节选