it involved nine
它涉及9个
以上为机器翻译结果，长、整句建议使用 人工翻译 。
It involved about three thousand four hundred uncircumcised Ugandan men between the ages of fifteen and forty-nine.
VOA: special.2009.04.01
It involved almost nine hundred sexually active women between the ages of eighteen and forty.
VOA: special.2010.07.21
It said 80 firefighters from nine stations were involved in the operation.
BBC: 'Biggest chemical spill' closes M62 in East Yorkshire
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