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Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
任何进入体内某部分的有害物质或细胞群
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任何进入体内某部分的有害物质或细胞群；渗透物
Any undesirable substance or group of cells that has made its way into part of the body.
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任何进入体内某部分的有害物质或细胞群
Any undesirable substance or group of cells that has made its way into part of the body.
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Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.