a lady's maid的用法和样例：
- The maid did down the walls with a duster.
- We have a maid to do the housework.
- He put a maid in to look after his sick wife.
- The butler gave the maid a dressing down for not cleaning the silver properly.
- There is a vein of melancholy in his character.
- There was a long lag in forwarding mail to us.