This irrigation canal has fallen into disuse.

这条渠荒废了。

《新英汉大辞典》

The word has fallen into disuse.

这个词已废而不用了。

youdao

Some words have fallen into disuse now.

有些词现在已经不用了。

youdao

Thankfully, they've fallen into disuse.

让人高兴的是，它已经被淘汰了。

哈佛公开课 - 计算机科学课程节选

Hotlines set up between leaders of the two countries have always fallen into disuse.

ECONOMIST: It's worse than you thought

"We are definitely dusting off a lot of the high-tax-rate strategies that have fallen into disuse, " says Isdale.

FORBES: Sidestepping Taxes

With the recurrent sickness and the problems with electricity and everything else, the sprawling, low-slung high school complex at the north edge of town had fallen into disuse.

NPR: Excerpt: 'World Made By Hand'