依法 (yī fǎ): legal (proceedings); according to law

The police lawfully arrested the man suspected of theft and took him to the public security bureau for investigation.

Because the company had long delayed paying its employees' wages, the employees lawfully sued it in court, and the court finally ordered the company to pay all the arrears.

If you are dissatisfied with an administrative penalty decision, you may lawfully apply for administrative reconsideration or directly file an administrative lawsuit in a people's court.

The municipal government lawfully demolished a number of illegal structures to ensure public safety and the smooth implementation of urban planning.

Because one party to the contract seriously breached it, the other party lawfully terminated the contract and demanded that the breaching party bear the corresponding liability for compensation.