This area is monitored 24 hours a day by security cameras.

Please always fasten your seatbelt when you get in the car.

He chose to discard a safe tile in mahjong.

The government is considering the security of its citizens as its top priority.

He saved money as a safety net before starting his own business.

The safety of this car is very high.

The agenda of the Security Council is an important issue related to national security and defense.

In our company, we always adhere to the principle of safety first.

Well then, I'm off.

He admitted that it is difficult to execute the plan, saying 'it is easier said than done.'