裤子垫膝布

例句：

1. 1.He put on his new pants and went out for a walk.
   他穿上新裤子出门散步。
2. 2. I need to change into my work clothes before the meeting.
   会议前我需要换上工作服。
3. 3. The pants fit him perfectly.
   这裤子穿在他身上非常合身。