OK, make a list of everything all that head-turning got you and compare it with what you accomplished when you used your brain instead of a push-up bra.
好的，将自己希望重新来过的所有事情列个清单，和你依靠大脑而不是身材所取得的成就做个比较。
3
So, if we want to compare them, we should probably subtract them from each other. OK, so let's do the flux integral for S1 minus the flux integral for S2 of the same thing.