Now people are smelling the sand storm, that is, due to the strong phoenixes rolling up a large amount of sand and dust, causing the air to be turbid, and the wind and sand weather phenomenon with visibility of fewer than 1,000 meters, which has actually existed in ancient times. , Is a project of nature and has a place in the global ecological balance. The most accurate interpretation of the sandstorm is. ['Sandstorm is one of the natural forces that sculpt the appearance of the earth, and it is a project of nature.', 'The sand storm is a wind and sand weather phenomenon caused by the wind to wind up a large amount of sand and dust, making the air turbid and visibility less than kilometers.', 'The weather phenomenon of sandstorm is a manifestation of natural force and has nothing to do with human activities.', 'Sandstorms are caused by human factors.']