| 单词 | optional |
| 释义 | optional (ɒpʃənəl ) adjective B2 If something is optional, you can choose whether or not you do it or have it. A holiday isn't an optional extra. In this stressful, frantic world it's a must. Sex education is a sensitive area for some parents, and thus it should remain optional. Synonyms: voluntary, open, discretionary, possible Collocations: 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 Translations: Chinese: 可选择的 Japanese: 自由選択の |
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