by fits and starts

英 [baɪ 'fɪts ənd s'tɑːts] 美 [baɪ 'fɪts ənd s'tɑːts]

• 一阵一阵地； 间歇地； 不规则地； 忽冷忽热地

英英释义

Adverb:

1. intermittently;

   "he worked on his book by fits and starts"