The main reason chilies set our mouths on fire is capsaicin. Certain chili peppers contain lots of capsaicin, which makes them extra spicy. Capsaicin is a fascinating ingredient because it can both cause and relieve pain. The spicy taste can make some people uncomfortable. At the same time, capsaicin blocks signals that tell the brain to feel pain. Because of this property, capsaicin is often added in creams and lotions to relieve pain on the skin.
辣椒让我们嘴巴像著火似的主因是辣椒素。特定辣椒富含大量使其变得特辣的辣椒素。辣椒素是一种很吸引人的食材，因为它可以导致不适感，同时亦可缓解疼痛。其所伴随的辣味会让某些人感到不适。与此同时，辣椒素阻挡了通知大脑有疼痛感的信号。由于此种特点，辣椒素通常被加在乳霜及乳液中以缓解皮肤上的疼痛。
生活必备字词：
set... on fire 使……燃烧
The criminal was arrested by the police after he set a house on fire.
signal n. 信号；讯号
cream n. 乳霜
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本文节录自《常春藤生活英语》杂志，完整内容请见三月号。
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