calm down; calm oneself; compose oneself

• 镇定下来

calm down; calm oneself; compose oneself的用法和样例：

例句

1. Emma frowned, making an effort to compose herself.
   埃玛皱起了眉头，努力使自己镇定下来。
2. After that, Tom settled down and played better.
   从那以后，汤姆镇定下来越打越好。