英语中“ninhydrin”怎么发音
nin·hy·drin
在真实视频片段中，结合具体语境收听母语者发音 ninhydrin
Linguistic Pronunciation Masterclass: “ninhydrin”
Phonetic mechanics, syllable architecture, and conversational cadence
Syllable Architecture & Stress Distribution
nin
Reduced vowel sound, relaxed jaw, and minimal vocal effort.
hy
Reduced vowel sound, relaxed jaw, and minimal vocal effort.
drin
Reduced vowel sound, relaxed jaw, and minimal vocal effort.
Keep the vowel length balanced, placing subtle emphasis on the root morpheme according to standard conversational rhythm.
Common Pronunciation Traps & Learner Mistakes
The Trap: Avoid pronouncing every vowel with full acoustic weight. Non-native speakers often over-enunciate unstressed vowels.
How Native Speakers Say It: Only give full vowel clarity to the primary stressed syllable. Relax all unstressed vowels into a neutral, low-energy schwa (⁄ə⁄).
Connected Speech & Natural Conversational Flow
When "ninhydrin" is followed by a word starting with a vowel, glide the final consonant into the opening vowel (e.g. "ninhydrin is" sounds like "ninhydrin-iz").
Maintain the stress-timed rhythm of English: compress unstressed syllables rapidly so the beat of "ninhydrin" aligns naturally with adjacent words.
Authentic Spoken Quotes from Native Video Context
“Ninhydrin solution on filter paper for amine indicator.”— MIT OpenCourseWareWatch clip
“If surfaces are porous or difficult to dust, investigators use chemical developers like Ninhydrin, which reacts with proteins left by fingers.”— TED-EdWatch clip
“Specifically, ninhydrin detects the amines present in the amino acids and proteins left behind by our fingerprints.”— Native SpeakerWatch clip
“turmeric, ninhydrin, Benedict's solution.”— MIT OpenCourseWareWatch clip
“This is actually an imine-forming reaction that occurs on the keto form of ninhydrin!”— Native SpeakerWatch clip
“The next few steps of this mechanism are beyond the scope of this episode, but basically, another molecule of ninhydrin reacts, and the two molecules link up through the nitrogen atom.”— Native SpeakerWatch clip
练习朗读 “ninhydrin”
仔细聆听母语者发音，对着麦克风大声跟读整句，即时获取逐词精准度打分与反馈。
Ninhydrin solution on filter paper for amine indicator.
语境中聆听: “ninhydrin”
8 个视频片段The 英语 word “ninhydrin”. Phonologically, it consists of 3 syllables (nin · hy · drin). Grammatically, “ninhydrin” functions as a noun. SayItVid indexes 8 authentic 英语 video clips demonstrating how native speakers articulate “ninhydrin” in natural connected speech across American (US: 8 sampled), British (UK), and Australian (AUS) accents, including verified broadcasts from MIT OpenCourseWare, TED-Ed.
Spoken Video Transcripts & Contextual Quotes (5 Verified Clips)
- 🇺🇸 USMIT OpenCourseWareClip #1 · @2:31
“It turns from yellow to red in the presence of a strong base. Ninhydrin solution on filter paper for amine indicator. In the presence of amines, color changes from pink to a dark purple upon heating”
- 🇺🇸 USTED-EdClip #2 · @2:51
“which sticks to the water and oil trail. If surfaces are porous or difficult to dust, investigators use chemical developers like Ninhydrin, which reacts with proteins left by fingers. investigators use chemical developers like Ninhydrin,”
- 🇺🇸 USClip #3 · @10:13
“which is used in chromatography to identify amino acids and forensics to view fingerprints. Specifically, ninhydrin detects the amines present in the amino acids and proteins left behind by our fingerprints. When it reacts with amino acids, a deep blue-purple color appears, called Ruhemann’s purple.”
- 🇺🇸 USMIT OpenCourseWareClip #4 · @3:16
“heating on a hot plate. Here are final results using turmeric, ninhydrin, Benedict's solution.”
- 🇺🇸 USClip #5 · @10:26
“When it reacts with amino acids, a deep blue-purple color appears, called Ruhemann’s purple. This is actually an imine-forming reaction that occurs on the keto form of ninhydrin! And the mechanism is fairly straightforward.”
释义与含义: “ninhydrin”
- The aromatic compound 2,2-dihydroxyindane-1,3-dione which is used as a reagent to detect amines
真实语境例句 (2)
- “Ninhydrin solution on filter paper for amine indicator.”
- “If surfaces are porous or difficult to dust, investigators use chemical developers like Ninhydrin, which reacts with proteins left by fingers.”
常用短语与词组搭配
发音完全相同（同音词）
独有发音在通用语料库中未收录与 "ninhydrin" 完全同音的其他词汇。
关于 ninhydrin 的常见问题
“ninhydrin”有多少个音节？
“ninhydrin”共有 3 个音节：nin · hy · drin。
“ninhydrin”是什么意思？
The aromatic compound 2,2-dihydroxyindane-1,3-dione which is used as a reagent to detect amines
如何收听“ninhydrin”在真实英文句子中的用法？
本页面包含 8 个带有同步双语字幕的真实视频例句。使用“上一条/下一条”（或方向键 ← / →）即可精准定位收听每个发音片段。
What is the most common pronunciation mistake when saying “ninhydrin”?
Avoid pronouncing every vowel with full acoustic weight. Non-native speakers often over-enunciate unstressed vowels. Only give full vowel clarity to the primary stressed syllable. Relax all unstressed vowels into a neutral, low-energy schwa (⁄ə⁄).