有坚实基川有事实根据的论据: arguments that have a firm basis ie that are founded on facts
有事: 1.(有事情要做) be engaged; occupied; busy 短语和例子我今天下午有事。 i'm engaged this afternoon.2.(有问题) when problems crop up; if sth. happens 短语和例子有事去找老师商量 consult your teacher when problems crop up; 做好准备,