He accused the mainstream political parties of cynically exploiting this situation.他指责一些主要政党从这一局势中牟取私利。He sought to extract the maximum political advantage from the cut in interest rates.他试图从降息中牟取最大的政治利益。The capitalist system extracts huge profits from arms production at the tax-payers' expense.资本主义体制牺牲纳税人的利益，从武器生产中牟取暴利。