work out 解决; 奏效
I just have that confidence that things are going to work out fine.
我就是有信心，相信事情总是能解决得很好。
It couldn't work out.
那是没用的。

settle down 定居; （使）安静下来; 平息
It took us a little while to settle down.
面对着生活中许多的未知，我们安顿下来。
He has no plans to settle down.
他并没有安定下来的打算。