Describes extremely arduous and physically demanding labor, often implying persistent effort that leads to calluses on the hands.
这位工匠一生专注于手工技艺，其双手布满厚厚的胼胝，这都是他胼胝之劳的最好印证。
This craftsman has dedicated his life to manual skills; his hands are covered with thick calluses, which are the best proof of his arduous labor.
Era:
Ancient
Frequency:
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