他关了与法院广场相切的那条街上的办公室门，走过了两条街回到家。

He closed his office on the street tangential to the courthouse square and walked the two blocks to his house..

《柯林斯英汉双解大词典》

但实际上，这是不对的，因为这个圆与这个坐标轴相切。

But, actually, that is not true because here the circle is tangent to the axis.

youdao

一条与曲面相切的直线。

And that line is tangent to the surface.

youdao

That means that you want to pick, ultimately, a point on this-- this line is tangent to the efficient portfolio frontier with all the other assets in it.

那意味着你会最终会在这上面选一个点-,这条直线是与有效边界相切的,后者包含了所有的资产组合。

耶鲁公开课 - 金融市场课程节选

Tangent means that it has the same slope, it just touches the efficient portfolio frontier for risky assets at one point, and the slope of the efficient portfolio frontier, including the riskless asset, is a straight line that goes through the tangency point, here.

相切意味着斜率相同，它与包含风险资产的有效边界,交与一点，而包含无风险资产的，有效边界，则是一条过切点的直线，切点在这里。

耶鲁公开课 - 金融市场课程节选