noun · The frequency or rate at which people turn their heads to look at someone or something, indicating the degree of attention attracted.

她今天打扮得很漂亮，走在街上回头率很高。

noun · The percentage of customers who return to a business, such as a restaurant or hotel, after their initial visit.

良好的服务和美味的菜肴是提高餐厅回头率的关键。