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op.por.tun.is.ticH.Bp7E7tjU:5nIs7tIk, $.B:7pL7tU:5nIs7tIkadjesp. disapproving投机的, 机会主义的an opportunistic crime一项投机罪An opportunistic infection is an infection caused by bacteria or a virus which is harmless to a healthy person but harms a person whose body's natural defence against infection is damaged.机会性感染(感染那些无抵抗力的人)
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