Under acute stress, the body's sympathetic nervous system prepares the body for sustained, vigorous action.
在极度紧张的情况下，人体的交感神经系统为身体有力的求生行为做了准备工作。
When the body is under attack from harmful micro-organisms be it a virus, cancer, or bacteria the immune system will go into action to deal with the invaders.
如果机体受到有害的微生物威胁时，比如病毒、癌细胞或者细菌，免疫系统就会发起免疫作用对抗这些入侵者。
Defend jamming, the duralumin housing body has very strong defend jam of action, make system firm run - time.
防干扰，铝合金壳体具有很强的防干扰作用，使系统可靠运行。
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