a dark suit

• 深色的西服

a dark suit的用法和样例：

例句

1. I went to the tailor's shop to try on my new suit.
   我到裁缝店去试新做的西服。
2. Peter's suit was old and it was high time he bought a new one.
   彼得的西服很旧，该是买件新的时候了。