不时; 断断续续地; 间歇地; 启闭

1. 打打停停：是三天打鱼两天晒网、打打停停(on and off)呢,还是一直坚持天天在学?是一直在开口练、戴上耳机用心听、跟着正确的录音模仿呢,还是闲着嘴巴不出声不去练?如果你是一直坚持在学英语、练英语、说英语有十年八年了,依我看,

2. 不时;断断续续地,间歇地：in large measure 很;大半;大部分 | on and off 不时;断断续续地,间歇地 | put an end to 结束或废除某事务

3. 或多或少：ups and downs 盛衰,浮沉 | on and off 或多或少 | more or less 迟早

adv

1. not regularly

[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;e.g. they phone each other off and on

[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;Synonym: off and on