15用英语怎么说的

"15" in English is pronounced "fifteen." It is a cardinal number that represents the quantity of 15.

The word "fifteen" comes from Old English "fīfteōntīene," which is a combination of "fīf" (meaning "five") and "tīene" (meaning "ten"). The word "fifteen" has been used in English since at least the 9th century.

Here are some examples of the word "fifteen" in sentences:

"I have fifteen apples in my basket." (我的篮子里有15个苹果。)
"The bus ride costs fifteen dollars." (乘坐公交车的费用是15美元。)
"She is fifteen years old." (她15岁。)