有效 (yǒu xiào): มีประสิทธิภาพ

This medicine is very effective for treating colds.

Daily exercise is an effective way to stay healthy.

The teacher used an effective teaching method.

This new policy is very effective and solved the problem.

In order to study effectively, you need to make a plan.

This medicine is very effective for headaches.

Is your passport still valid?

We need a more effective method.