To enter a place forcefully, often to steal or damage.
The thief broke into the store to steal money.
小偷强行闯入商店偷钱。
To interrupt something that is happening.
The loud noise broke into the quiet room.
巨大的噪音打破了房间的宁静。
To start using something new, especially after not using it for a while.
He broke in his new boots by hiking in the mountains.
他通过在山里徒步来磨合他的新靴子。