sān qín
意思解释：（3 diligent）犹言三苦。
指1958年全国各级学校开展的勤俭办学、勤工俭学、勤俭生产的活动。△西安第一航空技工学校这一面红旗，推动了全省各级学校的“三勤”活动……(《红旗》1958年8期)…
The hardworking and thrifty that shows countrywide various school was begun 1958 runs a school, the activity that part-work and part-study system, hardworking and thrifty manufactures. △ Xi'an vestibule school of the first aviation red flag of this one side, drove what visit various school completely 3 diligent activity... (red flag 1958 8 period) ...
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