治理雾霾的大招，印度新德里推出“抗雾霾枪”
NEW DELHI: The Delhi government is finding novel ways to deal with haze during winters. On Wednesday, the Delhi government used anti- smog+ guns to bring down p...
NEW DELHI: The Delhi government is finding novel ways to deal with haze during winters. On Wednesday, the Delhi government used anti- smog+ guns to bring down p...