| 单词 | O |
| 释义 | O 1. n. (also o) (pl. Os or O's) 1. the fifteenth letter of the alphabet. 2. (0) nought, zero (in a sequence of numerals esp. when spoken). 3. a human blood type of the ABO system. 2. abbr. (also O.) Old. 3. symb. Chem. the element oxygen. 4. int. 1. var. of OH(1). 2. prefixed to a name in the vocative (O God). Etymology: ME, natural excl. |
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