have numerous causes
有很多原因
以上为机器翻译结果，长、整句建议使用 人工翻译 。
In my dual profession as an educator and health care provider, I have worked with numerous children infected with the virus that causes AIDS.
作为一名教育工作者和保健工作者，我和许多感染艾滋病病毒的儿童一起工作过。
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