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ambiguous (adj.)：模糊不清的，模棱两可的 例句：The instructions on the package were ambiguous, leading many customers to make mistakes.（包装上的说明模糊不清，导致很多顾客出错。）​- persevere (v.)：坚持，不屈不挠 例句：Despite repeated failures, she persevered in her attempt to master the advanced software.（尽管屡次失败，她仍坚持努力掌握这款高级软件。）​- subordinate (adj. / n. / v.)：次要的；下属；使服从 例句1（adj.）：All other issues are subordinate to the need to ensure public safety.（所有其他问题都次于确保公共安全的需求。） 例句2（n.）：The manager often consults with her subordinates before making decisions.（经理做决定前常与下属商议。）​- trigger (v. / n.)：触发，引起；* 例句（v.）：The new policy triggered a heated debate among experts in the field.（这项新政策在该领域专家中引发了激烈辩论。）​- trivial (adj.)：琐碎的，不重要的 例句：Don’t waste time arguing over trivial matters; focus on the main problem.（别在琐碎小事上浪费时间争论，专注于主要问题。）