柯林斯词典erg /ɜːɡ/ 1. N the cgs unit of work or energy. 1 erg is equivalent to 10–7 joule 尔格; 功的单位erg /ɜːɡ/ N 1. N an area of shifting sand dunes in a desert, esp the Sahara (尤指沙哈拉荒漠中的)沙质荒漠erg /ɜːɡ/ N 返回 ergs