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| once upon a time | |||
| once (ctirip1); one-time (ctirip1); once only (LyuFi); only / just once (LyuFi); on one occasion only (LyuFi) | |||
| once upon a time | |||
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| once-off (the once-off offer Val_Ships) | |||
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единожды : 20 短语, 10 学科 |
| 一般 | 11 |
| 信息技术 | 1 |
| 微软 | 1 |
| 惯用语 | 1 |
| 编程 | 1 |
| 美国人 | 1 |
| 计算机网络 | 1 |
| 说 | 1 |
| 过时/过时 | 1 |
| 非正式的 | 1 |