(每日一词) perspicacious

Perspicacious /ˌpɜːrspɪˈkeɪʃəs/ adj. 敏锐的; 有洞察力的

Meaning: able to judge quickly and correctly what people and situations are really like 

前缀: per- 周围, 从头到尾(perimeter 周长-peri + meter)

词根: spic- 看, 同spect-

后缀: -acious 形容词后缀(acy + ous)

e.g. The perspicacious salesman earned a great living because he knew how to read his customers. 这位洞察力敏锐的销售员因为善于读懂顾客，所以赚到了很多钱.