【詞語】夙夜不怠
【拼音】sù yè bù dài【解釋】夙:早;怠:松懈。從早到晚從不懈怠。形容非常勤奮。來自http://www.kuaic.com/zidian6
夙夜不怠漢字解釋:夙 夜 不 怠
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