![Clouds can be seen above a dust storm as it descends upon the city of Sydney in Australia, November 22, 2018. Picture taken through the window. (Photo/Agencies)](http://www.ecns.cn/hd/2018/11/22/4864e0262afc4b22952bc9c988395288.jpg)
Clouds can be seen above a dust storm as it descends upon the city of Sydney in Australia, November 22, 2018. Picture taken through the window. (Photo/Agencies)
![The Sydney Harbour Bridge and Sydney Opera House can be seen during a dust storm as it in descends upon the city of Sydney in Australia, November 22, 2018. (Photo/Agencies)](http://www.ecns.cn/hd/2018/11/22/aef02f1bb1d8436495c5411f851ffe7d.jpg)
The Sydney Harbour Bridge and Sydney Opera House can be seen during a dust storm as it in descends upon the city of Sydney in Australia, November 22, 2018. (Photo/Agencies)
![A road is shrouded in a cloud of dust as a dust storm descends upon West Broken Hill, New South Wales, Australia, November 20, 2018 in this still image taken from a video obtained from social media. (Photo/Agencies)](http://www.ecns.cn/hd/2018/11/22/5a4dc6c1b953487598f64dc30dab504a.jpg)
A road is shrouded in a cloud of dust as a dust storm descends upon West Broken Hill, New South Wales, Australia, November 20, 2018 in this still image taken from a video obtained from social media. (Photo/Agencies)