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| Opéra m (One of the music genres that appears under Genre classification in Windows Media Player library. Based on ID3 standard tagging format for MP3 audio files. Winamp genre ID 103) | |||
| 英语 词库 | |||
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| operational analysis | |||
| out-of-pile expulsion and reentry apparatus | |||
| operational analysis | |||
| oil pollution environmental risk assessment | |||
| Open Process Engine For Reliable Activities | |||
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| A powerful type of drama, where a majority of the words are solely sung. | |||
| o | |||
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Opera : 43 短语, 11 学科 |
| 一般 | 19 |
| 医疗的 | 3 |
| 宗教 | 2 |
| 建造 | 1 |
| 文化学习 | 5 |
| 机械工程 | 1 |
| 爱好和消遣 | 1 |
| 艺术 | 5 |
| 行业 | 4 |
| 财政 | 1 |
| 通讯 | 1 |