 |
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| 从M点向上到N画一条垂线 (N) | |||
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project a vertical line from point upward to : 1 Phrase in 1 Thematik |
| Wissenschaftlicher Ausdruck | 1 |
|
| |||
| 从M点向上到N画一条垂线 (N) | |||
|
project a vertical line from point upward to : 1 Phrase in 1 Thematik |
| Wissenschaftlicher Ausdruck | 1 |