他不慎把杯子打碎了。
He carelessly broke the cup.
incautious; inattentive
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
Nice writing!
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
他不慎把杯子打碎了。
He carelessly broke the cup.
开车不慎会出事故。
Careless driving causes accidents.