os 1 
(ōs)
(ōs)n. pl. o·ra (ôrə)
A mouth or an opening.
[Latin ōs, mouth; see ōs- in the Appendix of Indo-European roots.]
| 单词 | os |
| 释义 | os 1 (ōs)n. pl. o·ra (ôrə) A mouth or an opening. [Latin ōs, mouth; see ōs- in the Appendix of Indo-European roots.] |
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