"Granny," he started,but then broke off again.
“奶奶,”他开始说,但又突然停了下来.
This is better,but then again it is more expensive.
这比较好,可就是贵了一点.
Then again; repeatedly; increasingly
一再地；重复地；继续增加地
He's clumsy and untidy but then again he's always willing to help.
他笨手笨脚的又邋遢；可是话说回来,他总是乐於助人.
I thought you told me about the fire,but then again it could have been Bill.
我想是你对我讲的那场火灾,要不就是比尔.