他们希望能在四十岁前安定下来，组建家庭。

They hope to ___settle ___down and start a family before they turn forty.

许多年轻人对于选择在哪里定居非常谨慎。

Many young people are very careful about where they choose to ___settle ___down.

在尝试了几个不同的城市后，她最终决定在波特兰定居。

After trying a few different cities, she finally decided to ___settle ___down in Portland.