Please pay attention to the subtle differences, particularly the Tangential line marking the fillet's point of contact with its adjacent surface, and how the reflections break there as well.

请注意细微的差别，尤其是切线标示出的倒圆角与临近面的连接处，还有在那里反射光是如何被打断的。

youdao

And it might just work, if BP can avoid getting dragged into a morass of tangential health claims like the ones that sank just about every company that manufactured or installed asbestos products as a main line of business.

FORBES: Asbestos Is A Good Lesson For BP -- To Avoid