Sense..

"科学其中必然存在着大自然的法则。。那就是一份质量的东西，只能产生相同质量
的物体。这就是[等价交换] 的原则。人不付出牺牲的话，就无法得到任何回报。如
果想要得到什么东西就必须付出同等的代价。" okie.. tis is wad i learn frm a jap anime.. haha.. it is quite meaningful.. i noe some of u cant read chinese.. so i translated it into english.. "In Science, its originally has its own nature personality.. Which is one standard kind of thing, will only reproduce same standard kind of product. This is the [same standard exchange] principle. If a person never sacrifice, he/she will unable to acheive any returns. Hence, if wanted to obtain something, its a must to pay off the same standard of sacrisfication."
it is same in life... in our life.. many @ times.. we have to do e same.. for example in study.. if u pay off all ur time in studyin.. n work hard.. e result u get in e end.. is wad u had exchange.. for ur hard work.. haha...