extra

The airline charged an extra fee for suitcases weighing over 23 kilograms.

(Chinese) 航空公司对重量超过23公斤的行李收取额外费用。

I always carry an extra set of car keys in case I lock myself out.

(Chinese) 我总是随身携带一套备用汽车钥匙，以防把自己锁在外面。

He worked as an extra in the battle scene, standing far back in the crowd.

(Chinese) 他在那场战争戏里当群众演员，远远地站在人群后面。

The studio hired hundreds of extras to make the stadium look full during filming.

(Chinese) 制片厂雇佣了数百名临时演员，好让拍摄时的体育馆看起来坐满了人。