Simplicity is the quality of being simple: not many parts, not hard to follow, not dressed up. The sense that matters most here is when that quality is attractive or useful — a dress chosen for its simplicity, a tool whose simplicity is the whole point, a plan that works because it does not try to do twelve jobs at once. People reach for the word when they are tired of fuss.

Simplicity is the quality of being simple simplicity 的意思是「簡單」這種特質: not many parts不是很多零件, not hard to follow不難懂, not dressed up沒有過度裝飾. The sense that matters most here這裡最重要的意思 is when that quality is attractive or useful是指這種特質很吸引人或很有用的時候 — a dress chosen for its simplicity一件因為簡單而被選中的洋裝, a tool whose simplicity is the whole point一個簡單正是重點所在的工具, a plan that works because it does not try to do twelve jobs at once一個因為不貪多而行得通的計畫. People reach for the word當人們厭倦了繁複 when they are tired of fuss就會用上這個字

Though actually, it has softer lives too. Older writing talks of the simplicity of country life, meaning a plain way of living, and of a person's simplicity, meaning a kind of openness that can sit close to innocence. Hear the tone on that last use: it can be warm, or it can slide toward “a bit naive.” In design, cooking, and school it is usually praise.

Though actually不過, it has softer lives too它還有比較柔軟的用法. Older writing older writing 裡 talks of the simplicity of country life講的是鄉間生活的簡樸, meaning a plain way of living意思是一種樸實的生活方式, and of a person's simplicity還有一個人的 simplicity, meaning a kind of openness指一種坦率, that can sit close to innocence可能接近天真. Hear the tone on that last use聽聽最後這個用法的語氣: it can be warm可能是溫暖的, or it can slide toward "a bit naive"也可能滑向「有點天真」. In design, cooking, and school在設計、烹飪、學校裡 it is usually praise它通常是稱讚

It is a noun, a little more formal than just saying “it’s simple,” but ordinary educated English, not specialist jargon.

It is a noun它是名詞, a little more formal than just saying "it's simple"比只說「it's simple」正式一點, but ordinary educated English但仍是普通的、有受教育者會用的英文, not specialist jargon不是專業術語