"The eyes light up and click. It happens -- 'I didn't know you had this.'" Jenny Johnson is the executive director of marketing for the Online Computer Library Center.

VOA: special.2011.07.11

So, I've never heard the click-click-click-click-click, and we might bring a Geiger counter in here some time later in the semester so we can check all of you out, and hopefully we won't hear any when we do that either.

但我知道如果,你听到哒哒哒的声音，就表明你有麻烦了，我从来没听到过哒哒哒的声音,也许以后我可以带一个,来课堂上检测你们每一个人，希望我们不会听到哒哒哒的声音。

麻省理工公开课 - 化学原理课程节选

So now, if I click the green flag, the program seems broken or--I don't know.

因此，如果你现在点击蓝色符号，程序可能会中断。

哈佛公开课 - 计算机科学课程节选

But I was convinced I'd hear the click-click-click-click-click which is what tells you you're in trouble.

我总会觉得很紧张，我不知道这是为什么,虽然我从来没有接触过放射元素。

麻省理工公开课 - 化学原理课程节选