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roadworkn.

英 'rəʊdwɜːk | 美 'rodwɝks
中文n. 长跑训练
词根词源
roadwork (n.)also road-work, 1765, "work done in making and repairing roads;" 1903 as "exercise done on roads;" from road (n.) + work (n.).
关键词
roadwork