2. The author gives an unusual twist to his story. 作者让故事产生了一个不寻常的转折。
3. Yes. You have to examine the incision for any unusual symptoms every day. 有,你必须每天检查手术伤口是否有不正常的症状。
英英解释
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