Disuse is the state of no longer being used. A tool, a room, a skill, a word, a railway — if people have stopped using it, it falls into disuse.

Disusedisuse（廢棄不用） is the state of no longer being used指的是不再被使用的狀態. A tool, a room, a skill, a word, a railway工具、房間、技能、單字、鐵路 — if people have stopped using it只要人們不再使用它, it falls into disuse就會falls into disuse（陷入廢棄不用）.

The usual pattern is fall into disuse, or years of disuse. The thing may still be there; it is not always broken or thrown away, just ignored.

The usual pattern常見的說法 is fall into disuse是fall into disuse（陷入廢棄）, or years of disuse或者是years of disuse（廢棄多年）. The thing這個東西 may still be there可能還在, it is not always broken or thrown away不見得是壞了或被丟掉了, just ignored只是被晾在一邊.

A language can fall into disuse. So can a muscle, if you never use it.

A language一種語言 can fall into disuse可能會陷入廢棄不用. So can a muscle一條肌肉也可能會, if you never use it如果你從來不用它的話.

The word is a little formal. There is a verb disuse, but you almost never hear it; people use this noun, or the adjective disused.

The word這個詞 is a little formal有點正式. There is a verb disuse雖然有動詞disuse, but you almost never hear it但幾乎沒人這樣用; people用 use this noun都是用這個名詞, or the adjective disused或形容詞disused.

Though actually, disuse is not the same as being unused from the start: unused can mean never used, or not used yet. Disuse means it had a life, and that life has stopped.

Though actually不過事實上, disusedisuse is not the same as being unused from the start跟一開始就unused（沒被用過）不一樣: unusedunused可以指 can mean never used從來沒被用過, or not used yet或還沒被用過. Disusedisuse means it had a life指的是它曾經有過作用, and that life has stopped而那個作用停止了.