adj.难热成型的 difficulty abrasive: 难度损 difficulttomix compound: n.难混炼胶料 difficulty curve: 分选密度±0.1曲线 difficultnesses: n. difficult的变形 difficulty in passing urinate: 《英汉医学词典》Difficulty in Passing Urinate ; 排尿困难 下载手机词典可随时随地查词查翻译