optional

• 1. 非强制性的: non-coercive | optional
• 2. 提供非强制性的注册: Make registration optional

• 1.有一位全程导游，可安排非强制性的进餐和观光。
  There is a tour guide throughout the trip who will organize optional dinners and sightseeing.
  dict.yoduao.com
• 2.处理其他所有非强制性的顶级测试。
  Process all other top-level tests that are not enforceable.
  dict.yoduao.com
• 3.作为一种非强制性的行政管理方式，行政指导体现了传统行政模式的转型。
  As a non-mandatory administrative, administrative guidance embodies the direction of the traditional model of administrative restructuring.
  dict.yoduao.com

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