He is confident in self abilities.

他对自身的能力充满信心。

The doctor is confident in the curative effect of this new drug.

医生对这种新药的疗效充满信心。

The board is confident in the abilities of the new successors.

董事会对新继任者的能力充满信心。

The thrower was confident in his ability to break the record.

这位投掷者对自己打破纪录的能力充满信心。

Despite the barbs from critics, the artist remained confident in her work.

尽管有评论家的尖刻的评论，艺术家仍对自己的作品充满信心。

We are quite confident in your sales ability.

我们对你们的销售能力充满信心。

And it only makes me more confident in our future.

它只会让我对我们的未来更加充满信心。

And we are confident in principles that unite and lead us onward.

对这些将我们团结起来并指引我们向前的原则，我们充满信心。

People notice when someone is confident in who they are and what they believe in.

某人对自己的身份和信念充满信心时，人们是能够意识到的。

So, again, I'm proud of you all. I am confident in your ability to do amazing things.

我再一次为你们所有人感到骄傲。我对你们的能力充满信心，相信你们创造辉煌。