四、紡織品保溫性基本指標為維持人體膚溫 33.5℃，核溫 37℃，請說明紡織品保溫原理及其對應的設計原理。（10 分）並說明保溫性測試之 clo 值的定義及組合 clo 值的定義。（10 分）

一、英譯中：請將下列英文譯為中文。（20 分） We benefit from taxing our brains with the mental exercise of humor, much as we benefit from the physical exercise of a long run or a tough tennis match. Comedy extends our mental stamina and improves our mental flexibility. Having an active sense of humor helps us to get more from life, both cognitively and emotionally.