原油 (yuányóu) means "crude oil," referring to unrefined petroleum extracted from the ground. It is a standard term used in economic and energy-related discussions. You will frequently encounter it in news about commodity prices and energy markets.
国际原油价格今天又涨了不少。
Guójì yuányóu jiàgé jīntiān yòu zhǎngle bùshǎo.
International crude oil prices went up quite a bit again today.
这个国家的经济高度依赖原油出口。
Zhège guójiā de jīngjì gāodù yīlài yuányóu chūkǒu.
This country's economy is highly dependent on crude oil exports.
原油供应紧张导致汽油价格上涨。
Yuányóu gōngyìng jǐnzhāng dǎozhì qìyóu jiàgé shàngzhǎng.
Tight crude oil supply has led to rising gasoline prices.