1. He betrayed his party and country. �����������ĵ����ҡ�
2. Do you betray your friends? ��ᱳ�����������?
3. Asking questions would betray my ignorance. ������ᱩ¶���ҵ���֪��
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v.
1. reveal unintentionally
2. deliver to an enemy by treachery
3. disappoint, prove undependable to; abandon, forsake
4. be sexually unfaithful to one's partner in marriage
5. give away information about somebody
6. cause someone to believe an untruth