单词 | treadle |
释义 | Word Frequency treadle(ˈtrɛdəl) noun 1. a. a rocking lever operated by the foot to drive a machine b. (as modifier) a treadle sewing machine verb 2. to work (a machine) with a treadle Derived forms treadler (ˈtreadler) noun Word origin Old English tredel, from trǣde something firm, from tredan to tread |
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