one of the tubes that carries blood from the heart to the rest of the body
She had to see a special doctor to discuss repairing a blocked artery in her neck.

something that prevents something else from traveling a certain path
The blockages in the toilet made the water come back up.

to help a cause, person, or group by giving money, things, or services
Science has contributed much to modern technology.

인구통계학의
We need to get the demographics of the city to predict how much it will expand in several years.

made up of people or things that are different from one another
Our school is diverse because many foreigners study here.

physical or emotional harm or damage that a person experiences
Mary fell down and got a injury.

거꾸로 할 수 없는, 역전할 수 없는, 철회할 수 없는
His actions were irreversible and as a result he had to pay the penalty.

to keep something working properly by regularly checking for and fixing any problems
We should try to maintain a positive attitude at all times.

a sudden change in the blood supply to a part of the brain, which can cause a loss of the ability to move particular parts of the body
A lack of blood to the brain will lead to a stroke.

a tube that carries blood through the body
The blood vessels transport blood throughout the body.