Question

请以什么is fun为题写一篇英语作文

Answer 1

living beings, such models of the universe are not of much interest. Opinion, is the best known for the economics principle of Occam's razor and cut out all the features of the theory that cannot be observed. Twentieth Century 20's. On the basis of the uncertainty principle, Heisenberg, Irwin, Schrodinger and Paul Dirac using the way of mechanical re expressio