half a million什么意思

half a million什么意思 half a million什么意识 half a million和a half million 有什么不同 half a million是什么意思 a half million thanks a million什么意思 half a million of trees还是half a million trees on in a million 是 什么 意思?. a million dollar question什么意思? more than half后面是a million 还是 of million seventeen and a half million 是多少 over half a million games are sold .