在他回忆早年的家族企业时，他的声音里带有一种确定无疑的怀旧语气。

There is an unmistakable note of nostalgia in his voice when he looks back on the early years of the family business.

《柯林斯英汉双解大词典》

因此医学界对于慢性疲劳综合症是否为一种确定的疾病尚存争论。

Thus there is disagreement in the medical community as to whether CFS is a distinct disease.

youdao

另一种确定你想要什么类型信号的方式是观察你离信号塔有多远。

Another way to try to nail down just what sort of signal you should expect is to look into how far away your local towers are.

youdao

That is, if I want to combine two things together in a particular way, I need to make sure that I give it the kind of operand it expects.

也就是，如果我想以一种特定的方式,把两个东西组合到一块，我需要确定,给了运算符它想要的输入。

麻省理工公开课 - 计算机科学及编程导论课程节选

if we do introduce a third possibility-- I'm not sure this is the right thing.

如果确实加入这一种可能-,我不确定这是对的。

耶鲁公开课 - 死亡课程节选

It is a much scarrier idea than saying I have this, I'm going to do it, I'm going to put it down there as opposed to being open to what may come and being uncertain whether that would be something good enough.

这和，我知道了，我要做这个，我想写这个，这种确定感相比,对可能的结果保持一种开放的心态，不知道,期待能否满足的未知感相比，更挑战一些。

普林斯顿公开课 - 人性课程节选