1. a prehistoric unrecorded language that was the ancestor of all Indo-European languages. 一种古老的无记载的语言是所有印-欧语系的祖先。
2. It supports explorations into the unrecorded or little known areas of the world from the deepest oceans to the highest mountains. 资助那些深入到人类未涉足或很少知道的地区的探索，从最深的海到最高的山。
3. It insures you in case that at some later date, a recorded or unrecorded document surfaces that can affect the title of the property you purchased. 它的保险您的情况下，在一些稍后日期，记录或无文件的表面，可以影响物业业权您购买的。
英英解释
adj.
1. actually being performed at the time of hearing or viewing
