something that reminds you of an earlier time
某些让你想起过去的事物 (mǒu xiē ràng nǐ xiǎng qǐ guòqù de shìwù)
"Seeing that old photo album was a blast from the past."
"看到那本旧相册真的是来自过去的爆炸。" (kàn dào nà běn jiù xiàngcè zhēn de shì **láizì guòqù de bàozhà**.)
To feel that one has done the right thing.
to improve or advance to a higher level
being kind doesn’t take effort or money
There is no point in worrying about past mistakes.
an early warning of potential danger
to contact someone to offer or request help