他矛盾地看着这份工作邀请，既想要高薪又担心压力太大。

He looked at the job offer ___ambivalently, torn between the high salary and the heavy workload.

她犹豫地笑了笑，既没有接受也没有拒绝邀请。

She smiled ___ambivalently, neither accepting nor declining the invitation.