| 单词 | grandfather clause |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔grandfather clause〕Because of a grandfather clause, the strict emission standards only apply to new cars.根据不追溯条款，这一严格的排放标准只适用于新车。韦氏高阶The new law does not allow any retail outlets in this zone but the grandfather clause exempts existing retail outlets.新法规定在这个地区不允许开零售店，但祖父条款规定现有零售店可不受限制。牛津商务 |
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