Wow, so not sure whether he's a mythical character or a real character.

哇，所以你定他是神话人物还是真实存在的人物。

But Naomi Kikoler and other anti-genocide advocates are not so sure.

但是娜奥米·基可勒和其他反种族灭绝倡导者定这种说法。

They're not certain how contagious people are when they get it.

当有人感染时，他们也定这些感染者的传染性有多强。

So while there's hope that Canada will join in, it's not a done deal.

因此，管加拿大仍有望加入该协议，情况仍定。

And I’m not always sure how much of a certain thing is bad.

而且我总是定某些成分的含量达到多少是健康的。

It's possible but not certain that they were mixed with other chemicals.

有可，但定它们是否与其他化物质混合。

But I can't be sure that that is true.

但我定这是真的。

I'm not sure if I could handle a salvo of angry words from you.

我定我承受得住你一连串的气话。

If you are not completely sure that something is food, do not eat it.

如果你完全定某样东西是食物，那你就要食用它。

Hmm, not sure about that. I get terrible travel sickness.

嗯，我定。我晕车很严重。

But WHO officials are not sure of the exact number.

但是世卫组织官员定具体数字。

Um, I'm not sure I can do that.

呃，我定这么做。

I'm not sure what it was about, but that's the latest rumor that's going on.

过我定，这是目前的最新传言。

It remains uncertain what messages the bears were sending to one another.

至于马来熊在互相传递什么信息，目前仍定。

I'm not so sure about that. All right, thanks, Mike.

这点我可定。好吧，谢谢你，迈克。

I'm not sure I can make it.

我定我去。

There is no known connection that he has to the school.

目前定他是否与校有联系。

Then compare it to a bottle you're not so sure about.

然后将其与定真假的那瓶药进行比较。

So where is Dorian going to go? Meteorologists still don't know.

那“多里安”要去往哪里？目前气象家仍定。

One thing archeologists and geologists don't know exactly is where Stonehenge's stones were mined.

考古家和地质家定的是，修建巨石阵的石块采自何处。