1. They argue that the amendment undermines Canadian federalism. 他们认为这项修改会逐渐损坏加拿大联邦主义。
2. Demanding too much of air travelers or providing too little security in return undermines public support for the process. 如果对飞机乘客的要求过于苛刻，或者相应的安全保障太少，反而会削弱民众对安检的支持。
3. But demanding too much of air travelers or providing too little security in return undermines public support for the process. 可是，如果对飞机乘客的要求过于苛刻，或者相应的安全保障太少，反过来就不利于民众对安检的支持。
4. Cheating undermines confidence and independence: the cheater is a fraud, and knows that without dishonesty, he/she would have failed. 欺骗会破坏信心和独立性：行骗者是骗子，他/她知道如果不去欺骗，他/她就会失败。
5. None of these effects was large, but the study undermines the claim that immigrants steal jobs from natives or drag down their wages. 这些影响都不是很大，但这项研究推翻了移民从本地人那里偷走工作机会或拉低他们工资的说法。
