self First argument by convention is always self, because it has to point to the instance, and then I pass, in this case, another couple of arguments in.

第一个参数往往是，因为它必须指向实例，然后我传入了，在这个例子中。

麻省理工公开课 - 计算机科学及编程导论课程节选

Development of an artificial heart, again another example of Biomedical Engineering, is something that people have been trying to accomplish for decades now, and this is the closest that we've come and there are many advantages of this particular artificial heart.

人造心脏技术的发展,是生物医学工程的另一个例子,科学家们,试图在这二十年中去改进它,而这是最接近成功的一个实例,这枚人造心脏有很多优点

耶鲁公开课 - 生物医学工程探索课程节选