避孕套如果谨慎使用，是一种有效的节育方法。
Condoms are an effective method of birth control if used with care.
免疫调节是一种可望用于人类的节育方法。
Regulation by immune intervention is a promising technology as applied to human beings.
阿伯迪认为如果有的话，一些当地人会接收现代节育方法的。
Abdi thinks that some local people would accept modern contraceptives if they were available.
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