2. The author gives an unusual twist to his story. �����ù��²�����һ����Ѱ����ת�ۡ�
3. Yes. You have to examine the incision for any unusual symptoms every day. �У������ÿ���������˿��Ƿ��в�������֢״��
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adj.
1. not usual or common or ordinary
2. being definitely out of the ordinary and unexpected; slightly odd or even a bit weird
3. not commonly encountered