On the average,the number of college students for every 10,000 people increased from 8.9 in 1978 to 32.8 in 1999.是什么意思_On the average,the number of college students for every 10,000 people increased from 8.9 in 1978 to 32.8 in 1999.在线翻译_英语_读音_用法_例句