埋头苦干
- na.work with quiet hard application
- 网络keep one's nose to the grindstone; bury oneself in work; work like a horse

埋头苦干
1.work with quiet hard application; bury oneself in work; engage in unostentatious hard work; immerse oneself in hard work; keep one's nose to the grindstone; plug away; quietly immerse oneself in hard work; quietly put one's shoulder to the wheel; work intensely
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