The sudden rise in share prices has confounded economists.

股价的突然上涨使经济学家大惑不解。

She confounded her critics and proved she could do the job.

她驳倒了批评者的看法，证明自己能够胜任那项工作。

He momentarily confounded his critics by his cool handling of the hostage crisis.

他通过冷静处理人质危机顿时使他的批评者们大吃一惊。

His behaviour confounded her.

他的行为使她莫名其妙。

I always confounded him with his twin brother.

我总分不清他和他的孪生兄弟。