近来几天，中国北京及附近地区被雾霾笼罩，PM2.5监测值不时爆表，在引发国内民众热议的同时也引来了国际媒体的关注。BBC、CNN、路透社、纽约时报等全球知名媒体都纷纷对污染情况作出了相关报导。让我们一起从新闻中学习有关的英语词汇吧！

1. hazardous/hazard 危险的

Air pollution in Beijing reached "hazardous" levels on Monday.

北京的空气污染指数在周一达到了“危险”级别。

Longtime exposure to particulate matter especially the particulate matter smaller than 2.5 micrometers (PM2.5) is a major health hazard.

长期暴露在悬浮颗粒，尤其是直径小于2.5微米的微粒（PM2.5）之中是对健康的严重危害。

BBC 标题：Beijing Air Pollution Soars to Hazard Level

2. smog 烟雾

The pollutants had left some of Shanghai's neighboring provinces shrouded in smog and fog.

污染物使得上海周边的省份也被烟雾笼罩。

英国每日电讯报标题：Beijing Choked by Third Day of Hazardous Smog

3. choke （使）窒息

A blanket of smog continued to choke much of China.

浓霾持续覆盖着中国多个省市，多地居民感到呼吸困难。

CNN标题：Beijing Residents Choke in Record Smog Levels

4. engulf 吞没

The pollution is expected to engulf Beijing until Wednesday.

污染将会席卷北京，直到周三才会有所好转。

彭博社标题：Beijing Orders Official Cars Off Road as Smog Engulfs City

5. off the charts/off the index 爆表，超出指数范围，打破记录

爆表是形容空气质量指数过高，按照新空气质量标准，将空气质量分为6个级别，最高级别为严重污染，就是空气质量大于300即是严重污染。1月12日，北京PM2.5指数达750濒临“爆表”，空气质量持续六级严重污染。

Beijing's air pollution levels were literally off the charts this weekend.

这周末北京的污染级别真的已经爆表了。

英国泰晤士报标题：China's Air Pollution Goes Off the Charts

6. curb 控制

Beijing orders official cars off roads to curb pollution.

北京为控制污染要求政府车辆不上路行驶。

英国卫报标题：Beijing Authorities Act to Curb Emissions as Air Pollution Hits Record Level