one and one half billion 是多少?

one and one half billion 是多少? one and one half billion 是多少?怎么看的? one and one-half billion和one and a half billion那一句常用啊 four and one-half million kilograms 是多少? one and a half million 是多少?为什么 one and a third billion是什么意思? what’s one third and one half one and half还是one and a half one and half 还是 one and a half one and a half day /one and a half days 是one and half hours还是one and half hour? one and a half apples