| 释义 |
eon (especiallyNAmE ) (BrE usuallyaeon ) BrE /ˈiːən/ NAmE /ˈiːən/ noun (formal ) an extremely long period of time ; thousands of years 极漫长的时间；千万年(geology地质学) a major division of time , divided into eras 宙（地质学上的年代分期，下分代）◆ eons of geological history 数以亿万年计的地质史 |