a billion million与a million billion 一样吗

a billion million与a million billion 一样吗 million billion million billion区别 billion、million怎么读? 1 billion=?million hundred、thousand、million、billion、trillion等词前加a加and 100 million 等于1 billion吗? 英语 hundred thousand million billion hundred,thousand,million,billion用法 million billion trillion的区别 Bob has a billion dollars while Kate has a million,so Kate i i'll bet you a million billion trillion dollars是啥意思