simmer down

基本解释

Let the broth simmer down a bit more.
让肉汤炖得再久一些吧。
chazidian.com
The very first thing is to disengage and allow some time for both of you to simmer down and reflect .
第一件事就是放开并给彼此一些时间来平息和思考。
Ok, , children. I need you all to simmer down and listen to Jason's story.
好的，孩子们，现在我需要你们安静下来听杰森的的故事。

The delay may also be an effort to let the political maelstrom over the hacking scandal simmer down, and distance the deal from that scandal.
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They point out that one cause of the new competition is that bookmakers were allowed to set up in Tattersalls, the big-money ring on courses, without serving an apprenticeship in the quids-and-dollars Silver Ring: when these neophytes come to a sticky end, competition will simmer down.
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Bring to the boil, then turn down the heat and simmer for 40-50 minutes.
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