It is to him that they owe their digital souls, the operating systems and programs which make them tick.

就是Dennis Ritchie，使得那些产品拥有了数字灵魂，操作系统和程序而得以正常工作。

youdao

Make a list of them and tick off the ones that you have done.

把它们做成一个清单，勾出你已做的。

youdao

And of course, lots of author interviews about their books and what make them tick.

FORBES: The Hay Festival Goes To Kenya

It's times like these that companies and the people that make them tick get tested.

WSJ: Yahoo Battles Brain Drain