释义
n. 平稳,风平浪静 a. 平静的,冷静的 v. 平静下来,镇静
例句
1. It was a beautiful morning, calm and serene. 那是一个宁静、明媚的早晨。 2. You should keep calm even in face of danger. 即使面临危险,你也应当保持镇静。