名词 certainty:

1. the state of being certain

2. something that is certain

certainadj.确定的；肯定的；某事；某人；某种；（与人名连用；表示不认识此人）一位叫...；特定的；轻微的；微小的pron.某些；某几个certain affiliated persons特定关系人certain quarter in the town市镇里的某地区Certain paper bulks well.一些纸的聚合性很好certain passages of a novel小说的一些片段Certain bats emit squeaks.某些蝙蝠发出吱吱叫声。certain and uncertain system确定不确定系统certain qualifier for finals肯定能进入决赛的选手certain varieties of soybean某些大豆品种certain diagnostic functions某些诊断功能certain eccentricity polishing定偏心抛光