And he quite correctly, because he's more senior than I am, more experienced than I am, said it's actually a good thing.

你可以用加法来加浮点数，他很明显是正确的，因为他比我年长些，比我更有经验些。

麻省理工公开课 - 计算机科学及编程导论课程节选

This is how you get the rules for adding a vector to another vector, then taking a vector and multiplying it by some constant.

以上这些就是矢量加法的法则,以及数乘矢量的法则

耶鲁公开课 - 基础物理课程节选