The company took less than four years to produce three X-15s.

VOA: special.2010.07.07

XYZ I might as well do it as x, y, z because we are talking about something that is going in three space.

我最好设成,因为我们在讨论,三维的事物。

麻省理工公开课 - 固态化学导论课程节选

Meaning, why in the world do I have to tell the reader that I'm binding x to the value three? All right?

意思就是，我为什么要,告诉代码阅读者,要把x绑定到3这个值上呢？，对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选

He estimates, though, that he will need results from at least three more Brood X outbreaks to draw firm conclusions about cicadas' habitat preferences.

ECONOMIST: The 17-year cicadas are about to emerge in force

Forty-three percent of Gen X females (women between 30-44 years old) noted that they are being or have been mentored by women.

FORBES: Choose the Right Mentor to Advance Your Career

And after his performance at the Brits, the judges believe Wakefield has what it takes to make the top three at the international X-Games.

BBC: SPORT | Other Sport | Skiing | Wakefield wins half-pipe