| 单词 | two-speed |
| 释义 | > as lemmastwo-speed two-speed adj. ΚΠ 1875 E. H. Knight Pract. Dict. Mech. Two-speed Pulley, a variable speed arrangement consisting of two fast pulleys, the shaft of one being tubular and sleeved upon that of the other. 1888 Encycl. Brit. XXIII. 560 Two-speed gears. < as lemmas |
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