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The main spring of the alarm clock is broken.
闹钟的簧断了。
《新英汉大辞典》
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Clock error is the main and direct source of errors in network measurement.
时钟误差是网络测量中最主要的直接误差来源。
youdao
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Clock error is the main and direct source of errors in network measurement.
时钟误差是网络测量中最主要的直接误差来源。
youdao