?毫无疑问的是

... 那是毫无疑问的。 There is no doubt about it 毫无疑问的是…… it is certain that 那是毫无疑问的事了 that's out of question ...

?可以肯定的是

[Negative impact] OUTCOMES OF RELEVANCE ? [产生负面影响]结果的相关性 it is certain that ? 可以肯定的是 I am falling Hold me now Heal my wounds ? 我属于治愈我的伤口 ..

?确信

... be certain/sure of doing 对…有把握 It is certain that 确信… in different style 以不同的形式 ...

?肯定

... naturally 显然 it is certain that 肯定 certainly 肯定 ...