half an hour? 什么意思?

half an hour? 什么意思? after half an hour什么意思? half an hour ago 什么意思? half hour =half an hour half hour half an hour 的意思有和区别? Half an hour =什么? in half an hour's time什么意思 half an hour 和a half hour有什么区别? spends half an hour的意思 in half an hour的意思是什么? half an hour的意思是什么 half an hour的意思是什么? a half hour还是half an hour? 是half hour还是half an hour? half an hour or a half hour? half an hour later half an hour造句 Half an hour. One and a half an hour 和An hour and a half 有什么不同