1. 我們要是買不起汽車，也就只好不用（汽車）了。
   If we can't afford a car, we'll just have to do without (one).
2. 不用說，夏日的傍晚是多么美。
   Needs not say how lovely are the summer evenings.
3. 這條路線旅行的人以前常走，但是現(xiàn)在已不用了。
   The route was once much travelled but has fallen into disuse.
4. 湯匙因棄置不用而生銹了。
   The spoon has been rusty from disuse.
5. 這是一些廢棄不用的詞。
   Here are some words that have fallen into disuse.

不的英語翻譯：

用的英語翻譯：