essence

essence    ：the most basic and important quality of something ,某事物的最基础最重要的特征，即其精髓，内核，本质 ,实质core/soul/nature

The essence of education is to teach students how to think critically.     

The essence of Macau is poker chips and entertainment.

Macau:澳门

poker chips:赌场游戏桌上用的筹码。

The essence of various cryptocurrencies is blockchain technology.

cryptocurrency：加密货币，虚拟货币的一种,在每日一词 toughen例句中出现过  Chinese authorities have toughened their control of cryptocurrency trading.

The essence of writing is clarity of thought/ clear thinking.

牛津搭配词典中的用法

1.real/true essence

2.capture/convey/embody/encapsulate/represent essence

encapsulate

essence

capsule

essence

翻译： 

创业公司的精髓是快速增长（可规模化）。 

The essence of start-ups is rapid growth/scalability.

造句：

As far as I am concerned, the essence of workout is to keep fit.