VERB
(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.
例句
...bitter divisions that have simmered for more than half a century...
酝酿了半个多世纪的严重分歧
The gardener exploded with the rage that had simmered all morning...
花匠憋了一个早上的愤怒终于爆发了。