- 难以捉摸: difficult ascertain
- 的: 4次方是 The fourth power of 2 i ...
- 因素: factor; element
- 难以捉摸的: difficult to perceive or describe; elusive; elusory; evasive; subtle a. delicate, hardly noticeable; untraceable
- 难以捉摸的香味: an elusive perfume
关注微信公众号：chachacidian，回复:难以捉摸的因素，即可在微信中查询翻译
