the unclearness of sth
不可数用法，指出某事物本身含糊不清；比单独用 unclear 更书面、更正式。
The unclearness of the rules caused a lot of confusion.
规则的不明确造成了大量困惑。
不清楚；模糊；含糊
不清楚之处；含糊之处；不清楚；模糊性；不清楚的事例；含糊之处
the quality of being unclear
不清楚；模糊性
The property of being unclear.
不清楚的事例；含糊之处
An instance of being unclear.
The unclearness of the instructions made it difficult for the students to finish the task.
说明的含糊性使学生们很难完成任务。
用法提示：“unclearness”为名词，意为“不清楚、含糊”，在句中作主语，后接 of 短语说明具体对象。
We need to discuss the unclearness in the report before sending it to the client.
在把报告发送给客户之前，我们需要讨论报告中的含糊之处。
用法提示：“unclearness”为名词，意为“含糊之处”，在句中作宾语。
Her answer was full of unclearness, so nobody knew what she really meant.
她的回答充满含糊，没有人知道她真正的意思。
用法提示：“unclearness”为名词，意为“含糊”，置于介词 of 后作宾语。
不可数用法，指出某事物本身含糊不清；比单独用 unclear 更书面、更正式。
The unclearness of the rules caused a lot of confusion.
规则的不明确造成了大量困惑。
about 引出含糊所涉及的话题，多见于 there be 句型，语气较委婉。
There is still some unclearness about the deadline.
关于截止日期仍有些不清楚的地方。
作可数名词时用复数 unclearnesses，指具体的一处含糊，in 引出所在的文本或领域。
Several unclearnesses in the report were corrected before printing.
报告中有几处含糊之处在付印前得到了改正。
grammar · medium
易错句子The message is unclearness.
正确表达The message is unclear.
系动词 is 后作表语描述主语性质时要用形容词 unclear，不能用名词 unclearness；unclearness 只能作主语或宾语等名词成分。
grammar · medium
易错句子His report contains many unclearness.
正确表达His report contains a lot of unclearness.
表示“含糊不清”这一抽象性质时，unclearness 是不可数名词，不能用 many 修饰；应改用 a lot of（或 much）。若指具体的含糊之处，才可用复数 unclearnesses。
grammar · medium
易错句子I have unclearness about the new rules.
正确表达I am unclear about the new rules.
unclearness 指事物本身“不清楚”的性质，不表示人的困惑状态；人作主语时应用 be unclear about 这一形容词搭配，表示“对……不清楚”。
ambiguity 强调同一表达可有两种以上合理解释，常是结构性的；unclearness 泛指不清楚、难以理解的状态或实例，不必然存在多种解释。
vagueness 多指表述笼统、边界不清，常含批评意味；unclearness 范围更广，可指理解、表达或状态本身不清楚，语气较中性。
obscurity 侧重文字或表达因深奥而难以读懂，语体较正式；unclearness 更通用，可指任何不清楚之处，不限于文字难度。
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