| 单词 | cos |
| 释义 | cos 1. n. a variety of lettuce with crisp narrow leaves forming a long upright head. Etymology: L f. Gk Kos, island in the Aegean, where it originated 2. abbr. cosine. 3. conj. & adv. (also 'cos) colloq. because. Etymology: abbr. |
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