基于XML的标记用于描述通过非预定义标记表示的数据。

XML-based markup is used to describe data that is represented through tags that need not be predefined.

youdao

专家怀疑Abdulmutallab的预定目标非锁定了底特律，而是在美国任何一个人口稠密的城市引起爆炸。

Experts doubted that Abdulmutallab's intended target was Detroit, but rather causing an explosion over any heavily populated U.S. city.

youdao

我要在非吸烟区预定一个二人坐的桌子。

I'd like to book a table for 2 in non-smoking.

youdao