| 释义 |
Examples:method of calculating a person's age in years from birth—quaternary (geological period covering the recent ice ages over the last 180,000 years)—traditional Asian method of calculating a person's age, which holds that a baby is one year old at birth—(in former times) coming-of-age ceremony at 20 years—Pleistocene (geological epoch from 2m years ago, covering the most recent ice ages)— |