单词：off-and-on
断断续续地, 时不时地
s intermittently stopping and starting
off-and-on的用法和样例：
例句
用作形容词(adj.)
- Like so many youngsters of the time his early education was hit and miss.像当时的许多孩子一样，他早年接受的教育是断断续续的，时而念书，时而辍学。
【近义词】
- fitful断断续续的
- interrupted中断的