1. Amid the specter of increasing trade protectionism this ogre is the last thing Beijing needs as the dust storms of spring loom over the horizon.
2. Dust storms later held up the military's progress, officers said.
3. They play a positive role in shielding northern and eastern agricultural ecosystems against sand and dust storms.
4. The spring dust storms which swirl out of North China and Mongolia are now depositing dust as far away as the US.
5. Some occur naturally from volcanoes and dust storms, and others from the burning of fossil fuels.
6. Desertified pastures have become the major source of sand and dust storms.