1. simmer down : 被煮浓, 息怒；
不及物动词
1. 用文火炖;煨
When you simmer food or when it simmers, you cook it by keeping it at boiling point or just below boiling point.
2. (冲突、争吵等)酝酿，即将爆发
If a conflict or a quarrel simmers, it does not actually happen for a period of time, but eventually builds up to the point where it does.
相关词组：simmer down
1. temperature just below the boiling point
e.g. the stew remained at a simmer for hours