Those days, the Third Age of Middle-earth, are now long past, and the shape of all lands has been changed;

中土世界第三纪元的那些日子早已远去，大陆地貌发生了翻天覆地的改变。

youdao

In author's opinion, LSS 'theory is the important part of the third age of control theory, i. e. the fundamental of the total complex automation.

作者认为，大系统理论是第三代控制理论的重要内容，是综合自动化的理论基础。

youdao

Just as your 18th or 21st was your first coming of age, your 50th is the coming of the third age; where you are healthy, wealthy and wise - and the world is very much your oyster.

正如你的十八岁和二十一岁是最初到来的你的时代一样，五十岁是第三到来的你的时代；这时，你健康、富有而且睿智——世界尽在你的掌握之中。

youdao

"Ahh!" July may be hot but another cool hit may be coming with the movie "Ice Age" This is the third in the "Ice Age" animated series.

VOA: special.2009.06.12

Pneumonia and diarrhea account for over one third of all deaths among children under the age of five.

VOA: standard.2009.12.28

Mrs Yates was a very active person who attended civic society meetings, the University of the Third Age and regularly went walking.

BBC: Betty Yates: Murder victim 'planned Bewdley move'

And entire industries have grown up around the idea of productive aging, the third age, or all the other marketing euphemisms out there.

FORBES: The Lesson From Pope Benedict: Be Prepared For The Day Your Strength Wanes

In my professional career I encouraged people to go into retirement with a positive attitude and to think of this phase of life as the Third Age.

BBC: What retirement means to you