He can identify with certainty the root of the problem.

他能确定无疑地指出问题的根源。

Scientists have identified with certainty a new species.

科学家们确定无疑地发现了新物种。

Through evidence, we can identify with certainty the conclusion.

通过证据，我们可以确定无疑地得出结论。

The police identified with certainty the suspect through fingerprints.

警察通过指纹确定无疑地确认了嫌疑人。

After multiple tests, the doctor could identify with certainty the illness.

经过多次检查，医生确定无疑地诊断出病情。

He agreed to our request with certainty.

他一口答应了我们的请求。

We can say with certainty that he is innocent.

我们可以一口断定他是无辜的。

She spoke with certainty, making her convincing.

她说话时充满了确定性，让人信服。

She said with certainty that the plan would succeed.

她一口说这个计划会成功。

He claimed with certainty that he did nothing wrong.

他一口咬定自己没有做错。