小雨不停的下
幼苗
共回答了17个问题采纳率:94.1% 举报
Air quality in Beijing is bad 4 days out of 5.
80% of the time,Beijing's air quality is bad.
不知道你增加的条件是什么意思,过去的一年里?如果是的话,改成
For the past year,air quality in Beijing is bad 4 days out of 5.
For the past year,Beijing's air quality is bad 80% of the time.
1年前
10