like getting blood out of (or from) a stone extremely difficult and frustrating.
☞ A North American variant of this expression is like getting blood out of a turnip.
英语词组固定搭配大全包含15956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。