a.

1. 不平常的；稀有的；奇特的
   It was not unusual for me to come home late.

   回家晚對我來說是不稀奇的。

   He has a nose of unusual size.

   他有個罕見的大鼻子。

2. 獨特的；非凡的
   He is an unusual child.

   他是個與眾不同的孩子。

adj.

1. not habitually or commonly done or occurring.
2. remarkable; exceptional.