单词 cool-back 释义 † cool-back[app. a. Du. koelbak, f. koel cool + bak back n.2]= cooler 2: esp. in a brewery. Obs.1707J. Mortimer Husb. (J.) Your first wort being thus boiled, lade off into one or more coolers, or cool-backs.1727Bradley Fam. Dict. s.v...