I'll bet they have yummy ice cream.

我打赌他们有好吃的冰激淋。

《柯林斯英汉双解大词典》

I'll bet they'll taste out of this world.

我相信它们的味道一定鲜美极了。

《柯林斯英汉双解大词典》

I'll bet you (that) he knows all about it.

我敢说他了解一切。

《牛津词典》

That was a good joke on me. By jingo, I'll bet I did jump six and nine-tenths inches.

VOA: special.2009.05.04

And then I say, oh you know I've used lists all over this program. I'll bet this isn't the only place where I've made this mistake.

变化引起的边缘效应，然后我的意思是,你知道的我在这个程序中一直都在用数组,我敢打赌我犯了这种错不止一次。

麻省理工公开课 - 计算机科学及编程导论课程节选

I'll bet you never heard of Tellus of Athens, neither had Croesus, neither had anybody else outside of Athens.

我打赌你们从没听说过雅典的特勒斯,包括克罗伊斯在内的,任何一个非雅典人都不知道

耶鲁公开课 - 古希腊历史简介课程节选

And I'll bet you, you're going to be heading out to that gardening store, right?

NPR: Vegetable Gardening On A Budget

But I'll bet they'll come up with something to remain at least somewhat viable.

CNN: Apps of the week: Getting there from here

Last time you checked out of a hotel, I'll bet, you were gouged for your long-distance calls.

FORBES: Magazine Article