known known-unknown unknown-unknown的意思|示意
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英 / /
已知已知-未知未知-未知
known known-unknown unknown-unknown的网络常见释义
已知的确定的已知的不确定因素 已知的确定的已知的不确定因素 known known-unknown unknown-unknown; known, known-unknown, unknown-unknown 不确定性；不确定度 indeterminacy .