Some simple things that people can do to protect themselves are, while it sucks staying inside, turning off your AC.

人们可以做一些简单的事情来保护自己，当在家中感到不适时，可以关掉空调。

Turn density equals number of turns inside the Amperian rectangle divided by the length of the Amperian rectangle.

匝密度等于安培矩形内的匝数除以安培矩形的长度。