He's intent upon revenge.

他一心想报仇.

《简明英汉词典》

But everybody was talking, and intent upon the grisly spectacle before them.

可是大家都在谈话, 一心关注的是眼前的这个惨状.

英汉文学 - 汤姆历险

They were so intent upon getting somewhere.

他们都那么急着要赶到什么地方去.

英汉文学 - 嘉莉妹妹

Looking round as I resumed my seat, I found both the brothers intent upon me. "

我回到座位上回头一看, 两弟兄都在注视着我. ”

英汉文学 - 双城记

In serving one's prince , on should be: intent upon the task, not bent upon the pay.

事君, 敬其事而后其食.

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