adj.确信的,确实的,有把握的,无疑的,一定的
adv.当然,确实地,无疑地
There is no easy or surefire way to fill vacancies.
填补职位空缺并无轻松或保证成功的方法.
But dance is not exactly a surefire , lifelong profession.
然而舞蹈并不能完全是一个终生的职业.
The cross itself isn't always a surefire sell signal.
交叉本身并不一定总是看跌信号.