A2 the red liquid that is sent around the body by the heart, and carries oxygen and important substances to organs and tissue, and removes waste products血,血液
to allow a trained person to take some blood from your body so that it can be stored and is ready to be given to people who have lost a lot of blood in an accident or operation献血
More examples
The teacher drew a diagram showing how the blood flows through the heart.
The appeal for people to donate blood was very successful.
She lost a lot of blood in the accident.
The police found traces of blood on his jacket.
The sight of so much blood made him shudder.
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