Let the broth simmer down a bit more.

让肉汤炖得再久一些吧。

Let the broth simmer down a bit more.

把肉汤炖得稍稍再稠些吧。

Like I said, I had to simmer down, just a tad.

就像我说的，我需要冷静，就一点点。

I think the trip may give me time to simmer down.

我以为这次旅行会给我时间冷静下来。

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故事。