They'll be warm when we're cold, and cool when we're hot.

感觉寒冷时，它将为我们保温，感觉炎热时，它将为我们带来一缕清凉。

Ever since antiquity, man has known about the fantastic ability of wool to keep you warm when it's cold and cool when it's hot.

自古以来，人类就知道羊毛的神奇能力，它能在寒冷时保暖、在炎热时保持凉爽。

Liu Wansu believed that " fire-heat" was the main cause of a variety of diseases and these diseases should be treated with drugs cold and cool in nature. So his theory was known as the " School of Cold and Cool" .

刘完素认为" 火热" 是疾病之源，应治以寒凉药，被称" 寒凉派" 。