英语词汇pin sth↔down怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	pin sth↔down
释义	●ˌpin sth↔ˈdownto explain or understand sth exactly 确切说明（或理解）◆The cause of the disease is difficult to pin down precisely. 病因目前还难以解释清楚。 See also pin
随便看	tractablenesses tractably tract home tract house traction tractional traction engine traction engines tractions tractlet tractor tricklingly trickly trickment trick or treat trick-or-treat trick-or-treated trick-or-treater trick-or-treaters trick-or-treating trick or treats trick-or-treats trick out trick out in trick out of

英汉双解词典包含314281条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。