They were unable to substantiate their claims of government malpractice.他们拿不出证据来证明他们所声称的政府渎职行为。Staff can lose their jobs only on grounds of professional misconduct.只要有渎职行为，员工就可能丢掉工作。A commission has been set up to enquire into alleged malpractice.调查被指控的渎职行为的委员会已经成立。