人體血液約占體重十三分之一，一個體重65公斤的人身上約有5公升的血液。

人體血液約占體重十三分之一，一個體重65公斤的人身上約有5公升的血液。

結果 (英文) 1:

Human blood accounts for about one-third of body weight. A person weighing 65 kg has about 5 liters of blood.

結果 (英文) 2:

Human blood accounts for about one-third of the body weight, and a person weighing 65 kilograms has about 5 liters of blood.

結果 (英文) 3:

Human blood accounts for about one thirteenth of the body weight, and a person weighing 65 kg has about 5 liters of blood.