音标：['ekstrә]
n. 额外的事物, 另外的收费
a. 额外的, 特别的
ad. 额外地, 特别地, 非常地
【法】 额外的, 外加的, 另外收费的
在线英汉词典

extra的短语、例句：

extra adj more than or beyond what is usual, expected or necessary; additional 额外的; 外加的; 附加的
extra pay for extra work 额外工作的额外报酬
buy an extra pint of milk 再买一品脱牛奶
The bus company provided extra buses because there were so many people. 因为人太多, 公共汽车公司派出了加车.
The football match went into extra time, eg because of injury to players or a drawn score. 这场足球赛进入加时赛（如因运动员受伤或因比分持平）. extra, adv 1 more than usually 超过一般地; 特别地; 格外; 分外
an extra strong box 加固的箱子
extra fine quality 特别好的质量. 2 in addition 额外; 外加; 除外: 20% extra 外加20%
price 1.30, packing and postage extra 价格1.30英镑, 包装和邮费另计. extra, n 1 extra thing; thing that costs extra 额外的事物; 另外收费的事物
Her school fees are 440 a term; music and dancing are extras. 她的学费是每学期440英镑, 音乐和舞蹈课另外收费. 2 (in cinema, TV, etc) person employed and paid (usu by the day) for a minor part, eg in a crowd scene （电影、 电视等的）临时演员（如扮演群众者）
We need hundreds of extras for the battle scenes. 我们拍战斗场面需要上百的临时演员. 3 (in cricket) run scored otherwise than from a hit by the bat （板球的）额外得分（非击球所得的分）. 4 special edition of a newspaper containing special or later news （报纸的）号外
a late night extra 晚间号外.