one billion和a billion这两种读法应该都可以吧?
one billion和a billion这两种读法应该都可以吧?
one and one-half billion和one and a half billion那一句常用啊
one and a third billion是什么意思?
ONE BILLION CUSTOMERS怎么样
ONE BILLION CUSTOMERS
billion is a billion is a billion is a billion这句话有意义吗?
ONE BILLION 有几个零?
“seven billion billion billion”是什么意思?
a billion and a half
a billion million与a million billion 一样吗
one and one half billion 是多少?
three-and-a-half billion