It lays its eggs in shallow depressions in the sand with very little protection around them.
它把蛋产在沙中的浅洼地里,周围几乎没有保护措施。
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It's commonly found in arid regions to provide protection from direct exposure to the sun, as well to protect the mouth and eyes from blowing dust and sand.
The spur-dike is a common important building which is usually used in river course improvement projects, controlling river trend, bend protection, beam attack sand and high water levels.