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冷天时，排放控制系统需要花费较长时间预热，才能全效工作。
Emission control systems take longer to warm up and become fully operational in cold weather.
youdao
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冷天时，排放控制系统需要花费较长时间预热，才能全效工作。
Emission control systems take longer to warm up and become fully operational in cold weather.
youdao