the most recent period in the earth's history, when human activities have a very important effect on the earth's environment and climate (= weather conditions)

Many geologists believe that humans have altered the earth so much since the start of the industrial revolution that we are now living in a new epoch called the Anthropocene. 许多地质学家认为，自工业革命开始以来，人类已经大大改变了地球，以至于我们现在生活在一个被称为 "人类世 "的新纪元。

relating or referring to the most recent period in the earth's history, when human activities have a very important effect on the earth's environment and climate (= weather conditions)

The Anthropocene Epoch is an unofficial unit of geologic time. 人类世是一个非官方的地质学时间单位。