a face covered with pimples的用法和样例：
- She reeled back against an upright of the porch as the man lifted a face covered with a dirty blond beard and stopped still, looking toward the house as if he was too weary to take another step.
- a face covered with grime and sweat
- Dora rushed into the room; her face covered with sweat .
- Dora rushed into the room, her face covered with sweat .