twenty-four seven all the time; twenty-four hours a day, seven days a week.
☞ The phrase, which originated in the US, is often written 24/7.
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。