| 单词 | 有效力 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔PROBLEM〕Federal laws have almost no effect on the crime problem that concerns most people - crime on the streets. 联邦法对影响大多数人的街头犯罪问题几乎没有效力。朗文写作活用〔manipulation〕Scientists are attempting, by genetic manipulation, to produce more effective vaccines.科学家们正试图通过基因控制的方法来培育更有效力的疫苗。麦克米伦高阶〔potentiate〕To enhance or increase the effect of (a drug).使更有效力：增强或强化（药物的）效力美国传统〔strengthen〕The amendment will strengthen the bill.这个修正案将使该议案更有效力。麦克米伦高阶〔tooth〕The law must have teeth, and it must be enforced.法律必须拥有效力，而且必须强制实施。柯林斯高阶〔tooth〕The opposition argues that the new council will be unconstitutional and without teeth.反对派争辩说新委员会不但违反宪法，而且没有效力。柯林斯高阶 |
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