名词
中文翻译：水生生物
同义词：
['aquatic organism', 'aquatic invertebrate']
例句：
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1. The phyllostomids are one of the most abundant groups of hyphplankton in the ocean.
扁形虫是海洋中最常见的一类水生无脊椎动物。
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2. The phyllostomids play an important role in the food chain by preying on other animals.
扁形虫通过捕食其他动物在食物链中扮演着重要角色。
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3. The phyllostomids have been found to be more diverse than previously thought, with over 50 speciesidentified.
研究发现，扁形虫的种类比之前认为的要丰富，已识别出超过50种。