英语词组pin sth down是什么意思，短语翻译、用法及例句-英语词组固定搭配大全

词组	pin sth down
释义	●ˌpin sth ˈdownto identify or understand sth exactly 确认；确切理解◆There’s something wrong with this photograph but I can’t quite pin it down. 这张照片有些不对劲儿，可我说不太清楚。◆Doctors have been unable to pin down the cause of her symptoms. 医生们还不清楚她为什么会有这些症状。[v + n/pron + adv] [v + adv + n]
随便看	hit sb up for sth hit sb up for sth (NAmE) hit upon sth hit upon sth hive hive sth off (into/to sth) hoe hoe in (AustralE, informal) hoist hoist sb/sth up hoist yourself up hold hold back (from doing sth) hold back on sth hold forth (on/about sth) (formal or humorous) hold off hold off (from) doing sth hold off sth, hold on hold onto sb/sth hold on to sb/sth hold on (to sth/sb) hold out holdout hold out for sth

英语词组固定搭配大全包含8584条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。