Crude Petroleum is the ancient source of energy.

原油是一种广泛使用的古代能源。

youdao

"Petroleum" is a broad term that includes both crude oil and natural gas.

说石油是一个广泛的定义，包括原油和天然气。接着我们看开头结尾和每段。

youdao

"Petroleum" is a broad term that includes both crude oil and natural gas.

说石油是一个广泛的定义，包括原油和天然气。接着我们看开头结尾和每段。

youdao