If I want a copy of the string, I've got to whip out my week 1 skills of just iterating with a four loop from left to right and make copies of those characters.

我需要那个字符串的一个拷贝，我使用,第一周的技巧，从左到右做四次迭代,然后复制这4个字符。

哈佛公开课 - 计算机科学课程节选

They were playing the accompaniment, and what string technique were they using?

它们是在伴奏,这些弦乐器使用了怎样的演奏技巧呢

耶鲁公开课 - 聆听音乐课程节选