joyliao 加入本网站时间 Member Since 04 April 2012 Joyliao's 评论 comments 该采取行动了！ 我非常同意！前天我回到我的宿舍，非常惊讶地发现我的白色毛衣变成了浅黄色。毛衣上面有好多沙尘！那天风很大，算是所谓的沙尘暴吧。环境问题正在变得越来越严重了。 ACTIONS TO TAKE! Definetely! The day before yestoday, the time i went back to my dormitory, i was surprised to see my white sweater has become light yellow. There was so much sand on it! That day was a windy day, the so-call sand storm. The environment problem has become more and more serious.