15用英文怎么说读

"15" in Engpsh is read as "fifteen."
It comes from the combination of "five" and "ten."

Example Sentences:

"I have 15 dollars in my wallet." (我钱包里有15美元。)
"I'm 15 years old." (我15岁。)
"The temperature is 15 degrees Celsius." (温度为15摄氏度。)