a.

1. 單獨的，獨自的[F]
   She watches TV when she is alone.

   獨自一人時，她便看電視。

2. 只有，僅；單單[A]
   The rent alone is $300.

   單房租就三百元。

ad.

1. 單獨地
   For years Mary lived alone in New York.

   瑪麗孤身一人在紐約生活了好幾年。

2. 獨自地
   I can do it alone.

   我可以獨自辦理此事。

adj.

adv.

1. on one's own; by oneself.
   ▸isolated and lonely.
2. only; exclusively.