Exposure to cold

Rogers, who had been clinging to the bus for more than three hours, was dazed and disoriented, by his prolonged exposure to cold.

由于长时间泡在冰冷的河水中，紧紧附着在汽车上3个多小时的罗杰斯，此时已经头晕转向的。

Intrinsic asthma: asthmatic attacks are precipitated by respiratory infections, exposure to cold, exercise, stress, inhaled irritants, and drugs such as aspirin.

内源性哮喘：哮喘发作与呼吸道感染有关，暴露于严寒，锻练，压力，吸入刺激物，药(如阿斯皮林)。

Converting white fat into brown is notoriously difficult, normally requiring long term exposure to cold conditions or activating part of the body's nervous system.

“白色脂肪”转化为“棕色脂肪”出奇困难，通常需要长期暴露在寒冷的环境中，或者激活人体部分神经紧张系统。