发明 (fāmíng) is a verb meaning "to invent" or "to create something new." It refers to the act of devising a novel product, method, or idea for the first time. China's "Four Great Inventions" (四大发明) are among the most famous examples associated with this word.
他花了三年时间发明了这个新产品。
Tā huā le sān nián shíjiān fāmíng le zhège xīn chǎnpǐn.
He spent three years inventing this new product.
中国人发明了造纸术和印刷术。
Zhōngguó rén fāmíng le zàozhǐshù hé yìnshuāshù.
The Chinese invented papermaking and printing.
谁发明了这么好用的工具?
Shéi fāmíng le zhème hǎoyòng de gōngjù?
Who invented such a useful tool?