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Whirlpool is a powerful circular current of water (usually the result of conflicting tides). There are many other definitions of whirlpool to get some of them - just search in Google for define: whirlpool.北虫草粉 金虫草粉 北冬虫夏草 北虫草花粉 代加工沙蒿籽粉调料粉
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There so many other whirlpools! Learn more about them in this sample article.