1.tackle both symptoms and root causes标本兼治
2．particulate matter微颗粒的问题
3．oversight 监管 accountability负责
4．be down to do安排好做某事
tackling smog is down to every last one of us治理雾霾人人有责
5．success depends on action and commitment贵在行动，行在坚持
6．conserve energy节能reduce emission减排
7．a common cause that requires all countries to roll up their sleeves各国撸起袖子一起干的共同事业
8．转变观念 change mindset
