请教如何把字幕里的两段英文批量合并为一段？

blackcharm

想把中英文字幕对照打印出来作为学习材料，可是有的段落分成两段，如何用批量替换的方法把两段文字合并为一段（没有标点间隔的最好加上空格），求助各位前辈，谢谢！
比如
123
00:11:35,403 --> 00:11:38,572
I'm awfully sorry.
I didn't mean to frighten you.


124
00:11:39,074 --> 00:11:42,117
But you don't know
what I've been through.


125
00:11:42,243 --> 00:11:44,912
And all because I was afraid.


替换成

123
00:11:35,403 --> 00:11:38,572
I'm awfully sorry.I didn't mean to frighten you.


124
00:11:39,074 --> 00:11:42,117
But you don't know what I've been through.


125
00:11:42,243 --> 00:11:44,912
And all because I was afraid.

blackcharm

研究了守柔版主的教程终于摸索出来了，谢谢！
([a-zA-Z]@)^13([a-zA-Z])
\1 \2

loquat

再加上一些标点符号的匹配吧，比如空格，句号，问号，感叹号。