The equations of the electromagnetic field are deduced from experimental facts.
電磁場(chǎng)的方程是從實(shí)驗(yàn)事實(shí)中推導(dǎo)出來的。
投資者應(yīng)警惕高費(fèi)用和復(fù)雜的產(chǎn)品。
I prefer liberty with danger to peace with slavery.
成功不需要天才或遠(yuǎn)見，只需要堅(jiān)持。
All things excellent are as difficult as they are rare.