In addition to writings, the new book contains art work done by death row inmates, many of whom Will regards as true artists.

VOA: standard.2009.10.21

It is clear that that vector is the sum of that vector and that vector, by the rules of vector addition, because that plus that is equal to the A.

这个矢量是这个两个矢量之和,根据矢量加法的法则,因为这两个矢量相加就等于 A

耶鲁公开课 - 基础物理课程节选