This word is about how correct, attractive, or suitable something is in its size and shape — a body, a room, a building, a vase.

This word這個字 is about講的是 how correct, attractive, or suitable something is某個東西的大小形狀有多恰當、好看、合適 in its size and shape——a body, a room, a building, a vase一個身材、一個房間、一棟建築、一個花瓶都可以這樣講。

You almost always meet it with well- or beautifully in front: a well-proportioned house; a beautifully proportioned face. Ill-proportioned exists too, for a shape that looks off.

You almost always meet it你幾乎都是看到它 with well- or beautifully in front前面加上well-或beautifully：a well-proportioned house一棟比例勻稱的房子；a beautifully proportioned face一張比例很美的臉。Ill-proportioned ill-proportioned exists too這個說法也有，for a shape that looks off用在形狀看起來不對勁的時候。

It is not the maths word. Though actually it does not mean “in proportion to some other changing amount.” It means the parts of this one thing sit well together.

It這個字 is not不是 the maths word數學上「成比例」的那個字。Though actually事實上 it does not mean它的意思不是 "in proportion to some other changing amount."「跟另一個會變動的量成比例」。It means它的意思是 the parts of this one thing這一樣東西本身的各部分 sit well together搭配得很好。

People who write about clothes, faces, and buildings like it. In daily talk, you more often hear in good shape or the rooms feel right.

People who write about clothes, faces, and buildings寫服裝、寫臉、寫建築的人 like it很喜歡用這個字。In daily talk在日常對話裡，you more often hear你比較常聽到的是 in good shape in good shape or或者 the rooms feel right the rooms feel right（房間感覺很搭）。