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deep + noun
deep 作定语修饰名词，表示物体从上到下或从表面到内部的深度大。
We drilled a deep well.
我们钻了一口深井。
深的
先理解核心含义，再看它在真实句子里的用法。
深的
Extending or reaching far down from a surface or point of reference, especially downward.
We drilled a deep well.
我们钻了一口深井。
深的,尤指向下延伸或位于深处的
Extending, reaching or positioned far from a point of reference, especially downwards.
复杂难懂的
Complex, involved.
音调低的；低沉的
Low in pitch.
色彩浓重的；饱和的；丰富的
Highly saturated; rich.
The river is very deep in the middle.
这条河的中间部分非常深。
She painted the walls a deep blue.
她把墙壁漆成了深蓝色。
He spoke with a deep voice that commanded attention.
他用低沉的声音说话，吸引了注意力。
deep 作定语修饰名词，表示物体从上到下或从表面到内部的深度大。
We drilled a deep well.
我们钻了一口深井。
deep 作表语，描述主语的特征。
The river is deep in this area.
这条河在这个区域很深。
表示沉浸在某种状态或活动中，后接抽象名词。
She was deep in thought.
她陷入沉思。
Not this
The lake is very deeply.
Use this
The lake is very deep.
deep 是形容词，而 deeply 是副词。描述状态时应用形容词 deep。
Not this
The river is deep of 5 meters.
Use this
The river is 5 meters deep.
英语中表达深度时，使用 '数字 + meters deep' 结构，而不是 'deep of 数字'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
深呼吸
Take a deep breath and try to relax.
深呼吸，试着放松。
沉睡
He fell into a deep sleep after the long journey.
长途旅行后，他陷入了沉睡。
深思
She was lost in deep thought and did not hear me.
她陷入深思，没有听到我的话。
深刻理解
He has a deep understanding of the subject.
他对这门学科有深刻的理解。
低沉的声音
His deep voice was very calming.
他低沉的声音非常令人平静。
深远的影响
The speech had a deep impact on the audience.
那场演讲对观众产生了深远的影响。
实际上；在心底
Deep down, she knew he was lying.
实际上，她知道他在撒谎。
处于困境
He found himself in deep water after losing his job.
失业后，他发现自己陷入了困境。
情绪失控；走极端
She went off the deep end when she heard the news.
听到这个消息后，她情绪失控了。
静水流深。
The quiet student turned out to be a brilliant writer; still waters run deep.
那个安静的学生原来是个出色的作家，真是静水流深。
我们本可拥有一切，在深渊中翻滚。
She sang the line 'We could have had it all, rolling in the deep' with great emotion.
她满怀感情地唱出了那句“我们本可拥有一切，在深渊中翻滚”。
发长 /iː/ 音 (如 see, free)
Use deep naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆 deep：低处瀑布（低瀑），水深莫测。
通常用于描述物理深度，多用于地理、建筑或日常测量等场景，为中性语体。
Also used as adverb and noun. Comparative: deeper, superlative: deepest.
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WORDNET.