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| Chinese | English |
| 自然共轭先验 | natural conjugate prior |
| 自然几何 | natural geometry |
| 自然对数 | Napierian natural logarithm |
| 自然对数的底超越数，等于2.7182318285 | transcendental number, base of natural logarithm (ε) |
| 自然对数的底超越数，等于2.7182318285 | transcendental number, the base of natural logarithm |
| 自然数 | natural number |