drag due to surface slope

例句：

1. 1. The car was dragged bythe heavy rain.
   汽车被大雨拖得很慢。
2. 2. She dragged her feet when she hadto go to work.
   她不得不去上班时总是拖拖拉拉的。
3. 3. The teampulled together to finish the project on time.
   团队齐心协力按时完成了这个项目。