cosKK [kɔs] /kɔs/发音连接词1因为口语、英式,because 的简写I stayed home cos the weather was really awful.我待在家里,因为天气真的很糟。名词1余弦数学,cosine 的缩写Enter the angle and the calculator gives you cos directly.输入角度后,计算机会直接算出余弦值。2萝蔓生菜、长叶莴苣英式She tore up some cos and tossed it with dressing.她把一些萝蔓生菜撕成小片,再淋上酱汁拌匀。用这个字练口说→