任选附件

【化】 optional extras

任的英语翻译：

allow; appoint; assume a job; let; no matter; official post

选的英语翻译：

anthology; choose; elect; pick; select

附件的英语翻译：

accessory; adjunct; annex; appendix; enclosure
【计】 accessory; attachment
【医】 adjunct; adnexa; annexa; appendage; appendices; appendix; armature
【经】 accessory; addendum; annex; attached sheet; attachment; enclosure
inclosure; supporting document