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optional | parameter
 parameter abbr.
comp., MS 参数

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Optional

['ɔpʃ(ə)nəl] abbr.
abbr., insur. o/p
mil., abbr. O
optional ['ɔpʃ(ə)nəl] abbr.
abbr. opsh
abbr., polym. opt.
optional
: 5 phrases in 1 subject
Microsoft5

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