For example, we can talk about the circulation of blood through the body.

例如，我们可以谈论血液在体内的循环。

When the head is allowed to get cold and the body is well insulated, the body's core temperature drops rapidly due to the circulation of blood.

当身体被隔绝得很好只把头露出来的时候，身体的核心温度会因为血液循环而急剧下降。

The circulation of blood from the right side of the heart to the lungs and back to the heart completes the pulmonary circuit.

血液从心脏右侧循环到肺，再回到心脏，完成了肺循环。

The second is warming. Qi is the source of energy of the body. This is prerequisite to the maintenance of normal body temperature, normal physiological activities of the viscera and normal circulation of blood and body fluid.

温煦作用。气是身体能量的来源。这是维持正常体温、内脏正常生理活动以及血液和体液正常循环的基础条件。