There is not an iota of truth in that.
那种说法一点儿道理也没有。

The buyer would not go one iota higher.
买方的出价不肯再提高半分了。

Our natures haven't changed a single iota.
我们的本性一点不会变。

Our credit standards haven't changed one iota.
我们的信贷标准一点都没有变。

Giving them data seemed to not impress them one iota.
给他们看数据似乎也无济于事。

Nothing has changed and my views have not changed one jot or iota.
甚麽也没变，我得观点也没有丁点儿或丝毫改变。

Science means honest， solid knowledge， allowing not and iota of falsehood， and it involves Herculean effort and grueling toil.
恐怕外人满得你的力量，你劳碌得来的，归入外人的家。