1. I can't advise my client to betray a confidence.
我不能劝说我的当事人做违背她原则的事
2. Fourthly, to tell a lie is to betray another's confidence in the liar.
第四，说谎是辜负别人对说谎者的信心。
3. If you argue your case with a neighbor, do not betray another man's confidence.
你与邻舍争讼，要与他一人辩论，不可泄露人的密事。
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4. He'd never taken her for the type to betray a confidence, especially one as sacred as a Fidelius Charm.
他从来都觉得她不是那种会背叛的人，尤其是象Fidelius这么恐怖的咒语。