a period of time that has a particular quality or character 时代；纪元 | We are living in an era in which technology is developing very rapidly. 我们生活在一个科技飞速发展的时代。 |
| the Thatcher era 撒切尔时代 |
| a new era The president promised to bring in a new era of peace. 总统承诺要开创一个和平的新时代。 |
| the end of an era Navratilova’ s retirement marked the end of an era. 纳芙拉蒂洛娃的退役标志着一个时代的终结。 |
| | a | one of the very long periods that prehistoric time is divided into （史前的）代，纪 | | the Jurassic era 侏罗纪 | |
| | b | a historical period with a particular character or feature 历史时期 | | the colonial/Roman era 殖民/罗马帝国时期 | |