re·frac·to·ry
adjective/rɪˈfræktəri/
/rɪˈfræktəri/
- (formal) (of a person) difficult to control; behaving badly
难以驾驭的;行为乖戾的 - (medical) (of a disease or medical condition) difficult to treat or cure
难以诊治的;难以治愈的
Word Originearly 17th cent.: alteration of obsolete refractary, from Latin refractarius ‘stubborn’ (see also refract).