essential factors of constitution

• 构成要素

essential factors of constitution的用法和样例：

例句

1. Different note lengths or durations are an essential element in rhythm.
   不同音符时值是节奏的基本构成要素。
2. Growing-up is the essential inscape of human beings and the eternal theme for world literature.
   成长是人类必不可少的构成要素，也是文学永恒的主题。