This is the 3126th most frequent Chinese word.
一種
"One kind" or "a type."
一種 is used here to denote 'a kind of' or 'a way of.' It introduces a specific method or approach.
旅行是一種讓人放鬆心情的方式。
Traveling is a way to relax one's mind.
Here, 一種 is used to convey 'a kind' of something, categorizing music as a form of art associated with emotional expression.
音樂是一種表達情感的藝術。
Music is an art of expressing emotions.
In this sentence, 一種 is applied to describe 'a type' or 'a method,' categorizing learning as a specific action for acquiring skills or knowledge.