era

The invention of the steam engine marked the beginning of a new industrial era.

(Chinese) 蒸汽机的发明标志着一个新工业时代的开始。

Historians often study the Victorian era to understand the social changes of the 19th century.

(Chinese) 历史学家经常研究维多利亚时代，以了解19世纪的社会变革。

Dinosaurs were the dominant land animals during much of the Mesozoic era.

(Chinese) 在恐龙时代的大部分时间里，恐龙是主要的陆地动物。

The Cenozoic era is the current geological period, which began 66 million years ago.

(Chinese) 新生代是当前的地质时期，始于6600万年前。