•The weather presented a particular challenge, especially for American servicemen unaccustomed to subarctic conditions.这种天气尤其对不适应亚北极地区气候的美国军人提出了特别的挑战。

•The Olympic and world champion finished in the unaccustomed position of fourth.这位奥运会冠军和世界冠军表现失常，最后仅仅获得了第四名。