动词短语
中文翻译：降速行驶
同义词：
['decelerate', 'slow down', 'reduce speed']
例句：
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1. During rush hour traffic, it's important to downshift to avoidcongestion.
在高峰时段，降速行驶以避免拥堵很重要。
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2. Thedriver must downshift whenthe road is too narrow forthe current speed.
当道路太窄无法保持当前速度时，驾驶员必须降速行驶。
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3. Downshifting can help maintaina safe distance from other vehiclesand reduce the risk of accidents.
降速行驶可以帮助保持与其他车辆的安全距离，减少事故风险。