根据问题出现的背景,代数实部可以接受从负无穷到正无穷的所有数值。
I was asked to act when I couldn't act. I was asked to sing 'Funny Face' when I couldn't sing, and dance with Fred Astaire when I couldn't dance. Do things that you don't know you can't do.
The highest purpose is to have no purpose at all. This puts one in accord with nature in her manner of operation.
过去是学习的重要来源,但也是错误的重要来源。