书写方式如下，就可以允许key1的value值换行了，但是整个过程要注意不要在文件中出现任何的非英文非半角的字符
key1=Where did you take the picture?\
It's so beautiful!\
It's so beautiful!\
asdfasdfasd\
asfasdfsdfsadf\
asdfsadfsadfsdf\
asdfsdfasdfsadf\
asdfsadfsdf