to feel deep sadness or sorrow
感到深深的悲伤或忧愁 (gandao shenshen de beishang huo youchou)
"He left the city with a heavy heart."
"他带着沉重的心情离开了城市。" (ta daizhe chenzhong de xinqing likai le chengshi)
to learn by making mistakes or through difficult experiences
a password that is difficult for others to guess, typically...
to make a fresh start or change for the better
used to give a brief and clear summary
To do what you promised to do.
to suddenly become very wealthy
