I adjure you to tell me the truth.

我恳请你告诉我真相。

I adjure you to speak the truth.

我请你实话。

She adjured him to tell the truth.

她恳实话。

I adjure you to tell the truth before this court.

我要你对本庭实话。

I adjure you to spare him.

我恳你饶恕。