1
be crystal clear
用于描述事物或信息极其清晰易懂。
The explanation was crystal clear.
这个解释非常清楚。
十分清晰的；清澈透明的；明白无误的
先理解核心含义，再看它在真实句子里的用法。
十分清晰的；清澈透明的；明白无误的
Completely clear; easy to understand, or transparent and without impurities.
The explanation was crystal clear.
这个解释非常清楚。
完全清晰；十分清楚；明白无误。
Completely clear (in various senses).
The water in the lake was crystal clear.
湖里的水清澈见底。
After the teacher's explanation, the concept became crystal clear to everyone.
老师解释后，这个概念对每个人来说都变得极其明白。
The instructions on the package are crystal clear, so you shouldn't have any trouble assembling it.
包装上的说明一目了然，所以你组装起来应该不会有任何问题。
用于描述事物或信息极其清晰易懂。
The explanation was crystal clear.
这个解释非常清楚。
直接修饰名词，表示极其清澈或清晰。
We could see the fish in the crystal clear water.
我们能看见清澈见底的水中的鱼。
后接that从句，强调某事被明确说明。
The manager made it crystal clear that punctuality is expected.
经理明确表示，准时是基本要求。
Not this
The instructions were very crystal clear.
Use this
The instructions were crystal clear.
“crystal clear”本身已表示“非常清晰”，再用“very”造成语义冗余。去掉“very”即可。
Not this
He made his point crystal clearly.
Use this
He made his point crystal clear.
“crystal clear”是形容词短语，不能修饰动词。应使用形容词形式作宾语补足语，即“make something crystal clear”。
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Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
Use crystal clear naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
通常用作表语或定语，不用于比较级。
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.