unknown
英 [?n'n??n]
美[,?n'non]
- adj. 未知的；陌生的，默默无闻的
- n. 未知数；未知的事物，默默无闻的人
英英释意
- 1. an unknown and unexplored region;
- "they came like angels out the unknown"
- 2. anyone who does not belong in the environment in which they are found
- 3. a variable whose values are solutions of an equation