Once radiosurgery treatment has destroyed the tumor's cells, the body's natural cleaning mechanism kicks in.

一旦放射外科治疗破坏了肿瘤细胞，身体的自然清洁机制就会启动。

When a person is ill, the body’s natural defence mechanisms come into operation.

【mechanism】生病时，人体内的自然防御机制就会开始工作。

The reason is the brain has a thermostat that it uses to trigger the body's natural cooling mechanisms, like sweating or passing blood through those AVAs.

原因是大脑有个恒温器来触发身体的自然冷却机制，如出汗或将血液通过那 AVAs。

Fischman: The reason is the brain has a thermostat that it uses to trigger the body's natural cooling mechanisms, like sweating or passing blood through those AVAs.

Fischman：原因是大脑有一个恒温器，它用来触发身体的自然冷却机制，例如出汗或让血液通过这些 AVA。