Flexiback
软背, 软脊(装帧)
🗣️ 情景例句
Well, maybe she will, and maybe she won't.
嗯， 也许她会， 也许她不会。
Nothing so necessary for travellers as languages.
旅行者最需要的是几种语言。
It is good preparation for the world outside schools and universities.
这对走出学校进入社会是一个良好的准备。