名词
中文翻译：线虫
同义词：
['nematode', 'roundworm']
例句：
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1.The nematodes are the larvae of many parasitic insects.
线虫是许多寄生昆虫的幼虫。
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2.The nematodes are responsible for the spread of diseases in farms.
线虫在农场中负责疾病的传播。
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3. The nematodes have a complex life cycle involving both symbiotic and parasitic relationships.
线虫具有复杂的生命周期，涉及共生和寄生关系。