... excessive gum formation 过量树脂的形成 excessive maintenance 加强保养维修 excessive measure 劣不变测度 ...
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机动车辆必须加强维修和保养，保持技术性能良 好，防治环境噪声污染。
Motor vehicles must be regularly serviced and kept in good repair in order to maintain excellent technical performance and help prevent and control environmental noise pollution.
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