Supporters of the death penalty argue that it would deter criminals from carrying guns.死刑的支持者认为它能阻吓罪犯携带枪支。Some animals give off an unpleasant odor that deters attackers.有些动物会发出臭味阻吓进攻者。The fines for speeding are large, but even so, they are not always a deterrent.对超速驾驶的罚款很重，但即使如此也不一定能起到阻吓作用。