unfasten .ʌn'fɑ:sn
GRE
释义
vt. 解开, 放松
英文释义
v. cause to become undone
v. become undone or untied
词形变化
过去式: unfastened 现在分词: unfastening 过去分词: unfastened 第三人称单数: unfastens
BNC词频排名: 26,835 | 当代语料库词频排名: 24,905