And many people would look back on Dell and say, "You just went straight up." Well, not exactly.

回头看戴尔的发展历程，很多人会说，你们的业绩直线上涨，其实并不尽然。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选

It's made of strong metal, it's got very thin slits to be able to see straight ahead, covered up; everything else is covered up, a good one will cover your neck as well.

头盔是坚固的金属制成,正面有一条很细的开口能让士兵看到前方,左右两边都包住,剩下所有地方都包住,好一点的头盔甚至能保护颈部

耶鲁公开课 - 古希腊历史简介课程节选

I don't know how well you can see it in this figure here, is the slope of a straight line connecting these two points, and as the points come closer and closer, the straight line would become tangent to the curve.

我不清楚你们对于这个图像的理解,这条连接两点的斜线,随着两点距离逐渐缩小,两点连线会变成曲线的切线

耶鲁公开课 - 基础物理课程节选