a load on one's mind的用法和样例：
- He will bear a load on his shoulders.
- I feel sorry for my husband. He really has a load on his mind.
- I feel sorry for my husband. Hec really has a load on his mind.
- There was a load on her mind and she wanted to be left on her own.But she did not want to go to somewhere outlaying.
- Each input of a device presents a load on the output driving it.