名词
中文翻译：线虫
同义词：
['nematode', 'roundworm']
例句：
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1.The nematode is the most common type of parasitic worm in humans.
线虫是人类最常见的寄生虫。
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2. The roundworm causes intestinal infections in humans.
线虫在人类中引起肠道感染。
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3. The nematode has a complex life cycle involving both vertebrates and invertebrates.
线虫的生命周期复杂，涉及脊椎动物和无脊椎动物。