in (or by) fits and starts with irregular bursts of activity.
☞ For other idioms containing fit, see the entry for the main word in the idiom (for example, fit to bust at bust).
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。