Fog to hit central, E China

 BEIJING, Jan. 21 (Xinhua) -- China's meteorological authorities said Monday that central and east China will be shrouded¹ in fog through Tuesday morning.

The National Meteorological Center (NMC) issued a blue alert² for the fog.

Blue is the lowest level in China's four-tier color-coded weather alert system.

Fog will lower visibility to less than 1,000 meters in parts of Tianjin municipality and the provinces of Hebei, Shandong, Shanxi, Henan, Jiangsu and Anhui, with visibility dipping as low as 200 meters in some areas, according to a statement on the center's website.

The NMC also said that a cold front will sweep most parts of north China from Wednesday to Thursday, bringing strong winds and dropping temperatures by 6 to 10 degrees Celsius³.

1 shrouded   

v.隐瞒( shroud的过去式和过去分词 )；保密

参考例句：

• The hills were shrouded in mist . 这些小山被笼罩在薄雾之中。
• The towers were shrouded in mist. 城楼被蒙上薄雾。 来自《简明英汉词典》

2 alert   

adj.机警的，活泼的，机灵的；vt.使...警觉

参考例句：

• Drivers must be on the alert for traffic signals.驾驶员必须密切注意交通信号。
• The rabbIt'seems to be very alert all its life.兔子似乎一生都小心翼翼，十分警觉。

3 Celsius   

adj.摄氏温度计的，摄氏的

参考例句：

• The temperature tonight will fall to seven degrees Celsius.今晚气温将下降到七摄氏度。
• The maximum temperature in July may be 36 degrees Celsius.七月份最高温度可能达到36摄氏度。