1、The sheer unexpectedness of it made my hair stir under my cap.
這猝不及防的驚變，使我帽子下面的頭發(fā)都豎起來。

2、the unexpectedness of the warm welcome.
這句溫暖問候的出人意料。

3、The unexpectedness of my father's death meant that his affairs were not entirely in order.
我父親的意外過世意味著他的個人事情不是完全有序。

4、Note this appears to conflict with unexpectedness above.
注意：這似乎與上述沖突始料未及。