Level 20 Level 22
Level 21

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technologically
技术
technology
技术
unconstrained
无约束
unconventional
非传统的
unconventionality
不墨守成规
unconventionally
突破传统
unjustified
不合理
unpublished
未公开
unreliability
靠不住
unreliable
靠不住
unspecified
未指定
valid
有效
validate
验证
validation
验证
validity
合法性