| 英文.... | Stage of adult life between young adulthood and old age; in humans, commonly defined as extending from 45 to 65. |
| 荷蘭語.... | De fase tussen volwassen en oud zijn; bij mensen valt dit meestal tussen 45 en 65. |
| 西班牙語.... | Etapa de la vida adulta entre la adultez joven y la ancianidad; en humanos, comúnmente definido como la extensión de los 45 hasta los 65. |
| 中年............ | [AS-Academia Sinica] |
| ................. | 朗文當代大辭典 p. 1112 |
| ................. | 國立編譯館學術名詞資訊網 September 23, 2011 |
| ................. | 智慧藏百科全書網 September 23, 2011 |
| ................. | 大英百科全書線上繁體中文版 September 23, 2011 |
| chung nien............ | [AS-Academia Sinica] |
| ................. | TELDAP database (2009-) |
| zhōng nián............ | [AS-Academia Sinica] |
| ................. | TELDAP database (2009-) |
| zhong nian............ | [AS-Academia Sinica] |
| ................. | TELDAP database (2009-) |
| middle age(life stage)............ | [VP] |
| ................. | CDMARC Subjects: LCSH (1988-) |
| ................. | Webster's Third New International Dictionary (1961) |
| ................. | Random House Dictionary of the English Language (1987) |
| age, middle(life stage)............ | [VP] |
| ................. | Getty Vocabulary Program rules |
| midlife............ | [VP] |
| ................. | CDMARC Subjects: LCSH (1988-) |
| middelbare leeftijd............ | [Bureau AAT] |
| ................. | AAT-Ned (1994-) |
| edad madura............ | [CDBP-DIBAM] |
| ................. | Diccionario de la Lengua Española (1992) 1:789 |
| Subject:............ | [AS-Academia Sinica] |
| ................. | Bureau AAT, RKD |