I was twelve when I wrote it, and I folded the note into her change purse.
写它的时候我12岁，我把这张便条折起来放进了她的零钱包里。
2
Twelve hours later, there was a note waiting for me at the airport instead of Karine.
12小时后，在机场等我的不是Karine而是一条消息。
3
The socio-historical environment Berg lived in and the twelve-note technique preparation he had held played a decisive role in creating this piece of music.