1. 确实；肯定；确定
2. 确信；确定；无疑
3.（不提及细节时用）某事，某人，某种
4.（与人名连用，表示说话者不识其人）某某，某位，一位叫...的
5. 轻微的；微小的；显而易见却难以描述的
pron.
certain of... （不提及人或事物的名称时用）某些 英语解释
- certain to occur; destined or inevitable
- definite but not specified or identified
- exercising or taking care great enough to bring assurance
- established irrevocably
- reliable in operation or effect
- having or feeling no doubt or uncertainty; confident and assured
- established beyond doubt or question; definitely known