This is the 3481st most frequent Chinese word.
数十
"数十" means "dozens" or "tens."
In this sentence, '数十' is used to indicate an unspecified number of decades, emphasizing the long duration of the company's operation without needing exact figures.
那家公司已经成功运营了数十年。
That company has been successfully operating for several decades.
Here, '数十' implies a range of possible kinds falling roughly between 10 to 90, showcasing the variety available.
在市场上可以找到数十种不同口味的茶。
In the market, you can find dozens of different tea flavors.
In this sentence, '数十' refers to dozens of people, emphasizing the participation level without specifying the exact number.