| 单词 | optional package | 
| 释义 | optional package The system was designed with the user in mind, with nearly every optional package installed. Retrieved from Wikipedia CC BY-SA 3.0  The album also came with an optional package of merchandise, which included a t-shirt, sunglasses, and a poster. Retrieved from Wikipedia CC BY-SA 3.0  Packages are composed of the package specification and an optional package body. Retrieved from Wikipedia CC BY-SA 3.0  They are an optional package that can be listened to in-game, replacing the original music, or just played with an audio player. Retrieved from Wikipedia CC BY-SA 3.0  In addition to the integral ceramic armor, optional packages have been developed. Retrieved from Wikipedia CC BY-SA 3.0  | 
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