So, it's a little bit of a trick when you're dealing with ions.

因此，这是一个处理离子问题时的小技巧。

麻省理工公开课 - 化学原理课程节选

Okay. First question: What string technique is being used here?

好,第一个问题是,这里运用了什么弦技巧

耶鲁公开课 - 聆听音乐课程节选

So honestly, one of the best strategies in this course and in programming in general is-- generally speaking design, but it's these little tricks of the trade that will honestly make things much more fun, much more easier, and really allow you to focus on the juicy parts of the problem and not little tiny bugs that you may have started tripping over already.

说实在的，这堂课在编程方面最棒的策略之一,简而言之，就是--设计，但这只是一些让事情更简单,更容易的小技巧，让你专注于问题的核心关键,而不是一些可能让你绊倒的,这样或那样的小错误。

哈佛公开课 - 计算机科学课程节选