The red bodily fluid that circulates in the body, transporting oxygen, nutrients, and waste; a basic medical and everyday term.
事故で大きな傷から血液が流れ出た。
After the accident, blood flowed from the large wound.
健康診断で血液検査を受けた。
I had a blood test as part of the health checkup.
緊急で輸血が必要だと告げられた。
I was told that an emergency blood transfusion was necessary.