/ˌdʒɛnəˈreɪʃənəl/
Generational means relating to a particular generation, or to the relationship between particular generations. 一代的; 两代之间的 [usu ADJ n]
例：
People’s lifestyles are usually fixed by generational habits and fashions.
人们的生活方式通常取决于那一代的生活习惯和流行时尚。