a grim face的用法和样例：
- We had a grim struggle before we won.
- She held on with a grim determination not to cry.
- A grim and unsightly picture met his eye.
- He himself had changed into a grim old dog.
- He takes rather a grim view of cases of this sort.
- Queues are a grim reality of city life.
a grim face的相关资料：