alternation
US /ˌɑːl.tɚˈneɪ.ʃən/
UK /ˌɒl.təˈneɪ.ʃən/
名詞
交替
a situation in which one thing repeatedly happens or exists after another:
範例:
•
Flowers and trees are planted to produce an attractive alternation of light and shade in the garden.