Word
melatonins
褪黑激素
melatonins is the plural of melatonin.
a hormone secreted by the pineal gland
- 1.
A hormone, related to serotonin, that is secreted by the pineal gland, and stimulates colour change in the skin of reptiles, and is involved in the sleep and wake and reproductive cycles in mammals.
褪黑素:一种与血清素相关的激素,由松果体分泌,能刺激爬行动物皮肤颜色变化,并参与哺乳动物的睡眠、觉醒及生殖周期。
- 2.
Any material similar in its chemistry and effect to the natural hormone.
褪黑素:任何化学性质和作用与天然激素相似的物质。
褪黑素:一种与血清素相关的激素,由松果体分泌,能刺激爬行动物皮肤颜色变化,并参与哺乳动物的睡眠、觉醒及生殖周期。；褪黑素:任何化学性质和作用与天然激素相似的物质。；褪黑激素; N-乙酰-5-甲氧基色胺
In use
I take melatonin when I have trouble sleeping at night.
Some studies suggest that melatonin levels change with the seasons.
She bought melatonin from the pharmacy to help with jet lag.
take melatonin
take 表示“服用（补充剂）”，区别于体内的自然分泌。
She takes melatonin before bed.
她睡前服用褪黑激素。
melatonin helps sb (to) do sth
help 后接宾语和不定式作补语，to 常省略。
Melatonin can help you fall asleep faster.
褪黑激素能帮你更快入睡。
melatonin levels
levels 常用复数，表示激素在体内的浓度。
Melatonin levels rise at night.
Connections
Collocations
- melatonin supplement
- 褪黑素补充剂
- She takes a melatonin supplement every night to help her sleep.她每晚服用褪黑素补充剂来帮助入睡。
- melatonin levels
- 褪黑激素水平
- Melatonin levels naturally increase in the evening and fall in the morning.褪黑激素水平在傍晚自然升高，早晨下降。
- melatonin production
- 褪黑激素的生成
- Exposure to bright screens at night can reduce melatonin production.夜间接触明亮的屏幕会减少褪黑激素的生成。
- take melatonin
- 服用褪黑素
- Some people take melatonin to relieve jet lag.一些人服用褪黑素来缓解时差反应。
- melatonin receptors
- 褪黑激素受体
- Melatonin receptors are found in many parts of the brain.大脑的许多部位都发现了褪黑激素受体。
Learner notes
Memory Tip
联想：夜晚拉上窗帘，“麦拉通宁”（melatonin）让身心宁静入睡，正是褪黑激素在助眠。
Context & Register
语域：neutral 常见场景：睡眠健康科普、保健品说明、日常健康对话 该词通常用于睡眠和保健品话题，在正式文章和日常对话中都较常见，正式程度适中。
Pronunciation & Spelling
Serotonin（/ˌsɛrəˈtəʊnɪn/）与 melatonin 押韵。Tone、tonic、angiotensin 和 melanin 是拼写或发音上的形似词，但不押韵：tone 词尾没有 /nɪn/，tonic 的重读元音是 /ɒ/ 而非 /əʊ/，angiotensin 和 melanin 的读音差别更大。
Learn the forms together
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.