in livery

例句：

1. 1. The groom was seen wearing his livery to the ball.
   管家穿着他的制服出席了舞会。
2. 2.He had been in the livery for many years.
   他从事马夫工作多年了。
3. 3.She wore her livery to the market.
   她穿着她的制服去市场了。