An orange alert means heavy pollution — PM2.5 higher than 150 — for three consecutive days.

橙色预警意味着连续三天的重污染，PM 2.5指数高于150。

China's central meteorological administration has continued its orange alert for the typhoon.

中国中央气象局继续发布台风橙色警报。

An even larger region is under orange alert for smog, after red alerts late last month forced traffic off the roads and closed some schools.

启动霾橙色预警的地区范围更大。上月底发布的红色预警曾导致车辆限行和学校关闭。

The Central Meteorological Station yesterday morning extended the warning of a strong cold spell and snowstorms by issuing an orange alert, the second-highest level.

中央气象台昨天上午发布了强冷空气和暴雪预警，将预警级别提高到了二级橙色预警级别。

The National Meteorological Center issued an orange alert, saying snow and sleet will sweep across central, eastern and southern regions from Friday night through Saturday.

中央气象台发布暴雪橙色预警，预计周五晚到周六我国中部、东部、南部地区将有新一轮强降雪。