1. The birds fluttered excitedly in the trees. ������������˷ܵط�����ȥ��
2. Her heart began to flutter with fear. ���������¶���ʼ��������
3. She flutter ed nervously about, going from room to room. �����Ų����ش��ⷿ�䵽�Ƿ����Ĵ��߶���
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n.
1. the act of moving back and forth
2. abnormally rapid beating of the auricles of the heart (especially in a regular rhythm); can result i
3. a disorderly outburst or tumult
4. the motion made by flapping up and down v.
1. move along rapidly and lightly; skim or dart
2. move back and forth very rapidly
3. flag the wings rapidly or fly with flapping movements
4. beat rapidly
5. wink briefly