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Don:The anatomy of fear, on this Moment of Science.
唐:今天的科學一刻為您帶來的是恐懼的解析。
Yael:One nice day you're walking along a wooded path.
雅艾爾:在一個天氣不錯的日子里，你正在林蔭小道里漫步。
You come around a corner and there, coiled in the path, is a huge rattlesnake, it's rattles abuzz.
但走到小道拐角一處時，你突然發現一條巨大的響尾蛇就在那里蜷縮著！還嘶嘶吐著蛇信。
You are deathly afraid of snakes.
你可是天生怕蛇怕得要死。
Don: Various parts of the brain signal the nervous systems and organs to prepare to take action.
唐:這時大腦中的各個部分給神經系統各個器官發出信號以對此作出反應：
The pupils of the eyes dilate, the thyroid gland raises the resting metabolic rate, the bronchioles in the lungs dilate to admit more oxygen, hairs stand on end, heart rate and blood pressure rise to supply the body and brain with fuel.
瞳孔放大，甲狀腺加快新陳代謝，肺部的支氣管擴張吸進更多氧氣，毛發豎起，心率加快，血壓上升以便供給身體和大腦能量。
Yael:The liver begins to break down sugars for quick energy, blood vessels in the skin contract causing chills and sweating, the spleen pumps out white blood cells in case there is an injury, stomach and intestine enzyme secretion and muscle activity needed for digestion stop, and blood vessels in the stomach and intestines contract to divert blood to the muscles.
雅艾爾:肝臟加速分解糖分供能。皮下血管收縮，身體發冷出汗。脾臟產生更多白細胞抵抗受傷。腸胃酶的分泌及肌肉活動引起食欲不振。腸胃的血管收縮，血液傳輸到肌肉組織。
Don:The bladder and colon prepare to empty, the central portion of the adrenal medulla floods the bloodstream with adrenaline and noradrenaline, constricting the blood vessels, breathing quickens.
唐:膀胱和結腸有可能排空，血液隨腎上腺素和去甲腎上腺素匯聚到腎上腺髓質的中部，血管收縮，呼吸加快。
The entire body is in a state of high alert, ready to stay and fight or say "Feet don't fail me now."
整個人都處于高度戒備，要么呆在那不動，或者人蛇大戰，再或者告訴自己“我可根本不怕哦”。
Yael:Did you follow all that?
雅艾爾:你會有上述所有反應嗎？
Of course not, but all that, and more, happens in your body within seconds of your sensing a threat.
當然不是所有咯！但是，當你遭遇驚嚇，身體會在僅僅幾秒內產生更多反應。
Don:It makes us tired just thinking about it
唐:光想想就夠累人的！
