a.

1. 額外的；外加的[B]
   I don't suppose they wanted any extra help.

   我想他們不需要額外幫助。

2. 另外收費的[F]
3. 特大的；特佳的

ad.

1. 額外地；另外
   They charge extra for wine.

   喝酒他們另外收費。

2. 特別地，非常地
   I have to be at the office extra early tomorrow.

   我明天必須很早就到達辦公室。

n.[C]

1. 另收費用的項目；附加費用
   The dinner cost twenty dollars without the extras.

   除去額外費用，那頓飯花了二十元。

2. 臨時演員
3. （報紙的）號外
4. 品質特別好的東西，上等產品

adj.

adv.

1. to a greater extent than usual.
2. in addition.

n.

1. an item for which an extra charge is made.
2. an extra item.
3. a person engaged temporarily to fill out a crowd scene in a film or play.
4. Cricket  a run scored other than from a hit with the bat, credited to the batting side rather than to a batsman.

[名]

1. 臨時演員；配角。
   엑스트라에서 주연급으로 발탁되다.

   從配角提拔為主演級。