翻译成英语我们应该减少户外活动，出门戴口罩，防止灰尘进入肺中，增加绿化面积， One of effective solutions to help eliminate haze is to make some chemistry changes during the manufacturing process，so it could reduce harmful emissions which 。
空气污染指数达到多少不宜户外运动 这个还真是期待有关专业人士给出科学的答案，很关注这个，毕竟是与自己生活息息相关的事情，总不能戴着口罩去户外跑步健身吧，会呼吸不过来的。
我最喜欢的户外活动 英语作文50个单词 Many people like to swim in summer.So do I.My favorite sport is swimming.Just imagine。What fun it is to jump into the water in hot summer。In hot weather，I often go to swim in the swimming pool with my family.Swimming can not only make us strong and healthy，but also helps us to keep in good shape.But few people like to swim in winter because it is too cold.Swimming in winter needs much courage.I hope one day I can be strong enough to swim in winter.我最喜爱的运动很多人喜欢夏天游泳.我也是.我最喜欢的运动就是游泳.想想在炎炎夏日跳进水里该是多么有趣啊。在热天我经常和家人去游泳池游泳.游泳不但能让我们强壮健康，也能让我们保持苗条身材.但是很少人在多天游泳，因为太冷了.在冬天游泳需要很大的勇气.我喜欢有一天我能足够强壮到可以在冬天游泳.
