stimulant

简明释义

英[ˈstɪmjələnt]美[ˈstɪmjələnt]

n. 引起兴奋的物质，兴奋剂；刺激物，激励因素；酒精饮料

adj. 使兴奋的，刺激性的

复 数 s t i m u l a n t s

英英释义

单词用法

同义词

反义词

例句

1.It is used in medicine for its stimulant quality.

由于它有兴奋剂的特性而被应用于医学。

2.A mixture similar to the protein content of egg whites activated these cells, triggering the release of the stimulant orexin.

一种与蛋清中所含的蛋白质相类似的混合物质激活了这些脑细胞，引发了使人兴奋的促食素大量释放。

3.As a stimulant it will keep you awake, even if used nearly six hours before bed.

作为兴奋剂它会让你保持清醒，即使差不多是在睡觉前6个小时。

4.One of fiction’s most famous stimulant users is the great caper cracker Sherlock Holmes.

虚构人物中最著名的兴奋剂使用者之一是伟大的犯罪侦破专家歇洛克·福尔摩斯。

5.They found that sugar ACTS as a stimulant that switches on normal bacterial responses, rendering the bugs vulnerable to antibiotic attack.

他们发现糖就像兴奋剂一样，让细菌的正常反应得以恢复，从而使它们对抗生素的攻击更为敏感。

6.So, sit back with your stimulant of choice and enjoy New Scientist's round-up of animals on drugs.

所以，拿着你的酒坐好，一起来看看《新科学家》对动物药物成瘾的集中介绍吧。

7.Nicotine is both a stimulant and a depressant.

尼古丁既是一种兴奋剂也是一种镇定剂。

8.In a sample of middle- and high school students, the illicit useof stimulant medication was 4.5 percent.

中学生和高中生样本中非法服用兴奋剂的比例是百分之四点五。

9.The doctor warned him that using stimulants could lead to health issues.

医生警告他，使用兴奋剂可能会导致健康问题。

10.Some athletes use stimulants to enhance their performance during competitions.

一些运动员使用兴奋剂来提高他们在比赛中的表现。

11.Many students consume energy drinks as a stimulant to stay awake while studying.

许多学生饮用能量饮料作为一种兴奋剂，以便在学习时保持清醒。

12.Nicotine is a natural stimulant found in tobacco products.

尼古丁是烟草产品中发现的一种天然兴奋剂。

13.Coffee is a popular stimulant that many people rely on to start their day.

咖啡是一种流行的兴奋剂，许多人依赖它来开始新的一天。

作文

In today's fast-paced world, many individuals seek ways to enhance their productivity and energy levels. One common method is through the use of various substances known as stimulants. A stimulant is defined as a substance that raises levels of physiological or nervous activity in the body. These can range from natural sources like caffeine found in coffee and tea to synthetic drugs designed to increase alertness and concentration. Understanding the effects and implications of stimulants is essential for making informed choices about their use.Caffeine, one of the most widely consumed stimulants, is often the first choice for individuals looking to boost their energy. It works by blocking adenosine, a neurotransmitter that promotes sleep, thus increasing alertness. Many people rely on their morning cup of coffee to kickstart their day, and while moderate consumption is generally considered safe, excessive intake can lead to negative side effects such as anxiety, restlessness, and insomnia. This highlights the importance of moderation when using stimulants like caffeine.Another popular type of stimulant is nicotine, found in tobacco products. While some individuals use nicotine for its stimulating effects, it is important to recognize the severe health risks associated with its use. Nicotine addiction can lead to long-term health issues, including respiratory diseases and cardiovascular problems. Therefore, while it may provide a temporary boost in focus and energy, the long-term consequences are often detrimental.In recent years, the use of prescription stimulants such as Adderall and Ritalin has gained attention, particularly among students and professionals seeking to enhance cognitive performance. These medications are typically prescribed for conditions like ADHD but are sometimes misused by individuals without these diagnoses. While they can improve concentration and reduce impulsivity, misuse can lead to serious health risks, including dependency and cardiovascular issues. This raises ethical questions about the fairness of using stimulants to gain an advantage in academic or professional settings.The rise of energy drinks is another phenomenon linked to stimulants. These beverages often contain high levels of caffeine, sugar, and other additives that promise increased energy and alertness. While they may provide a quick boost, the combination of ingredients can lead to health complications, including heart palpitations, anxiety, and digestive issues. Consumers must be cautious and aware of what they are ingesting when choosing to consume these products.In conclusion, stimulants play a significant role in modern society, providing both benefits and risks. Whether it's caffeine, nicotine, prescription medications, or energy drinks, understanding how these substances affect our bodies and minds is crucial. While they can enhance productivity and alertness, reliance on stimulants can lead to negative health outcomes. Therefore, it is essential to approach their use with caution and mindfulness, ensuring that we maintain a healthy balance in our pursuit of productivity and well-being.

在当今快节奏的世界中，许多人寻求增强生产力和能量水平的方法。一种常见的方法是通过使用各种被称为兴奋剂的物质。兴奋剂被定义为一种提高身体生理或神经活动水平的物质。这些物质可以从咖啡和茶等天然来源到旨在提高警觉性和集中力的合成药物不等。理解兴奋剂的效果和影响对于做出明智的使用选择至关重要。咖啡因是最广泛消费的兴奋剂之一，通常是寻求提升能量的个人的首选。它通过阻断腺苷（一种促进睡眠的神经递质）来发挥作用，从而提高警觉性。许多人依靠他们的早晨咖啡来启动一天，虽然适度消费通常被认为是安全的，但过量摄入可能导致负面副作用，如焦虑、不安和失眠。这突显了在使用像咖啡因这样的兴奋剂时适度的重要性。另一种流行的兴奋剂是尼古丁，存在于烟草产品中。虽然一些人使用尼古丁来获得刺激效果，但重要的是要认识到与其使用相关的严重健康风险。尼古丁成瘾可能导致长期健康问题，包括呼吸系统疾病和心血管问题。因此，虽然它可能提供暂时的专注和能量提升，但长期后果往往是有害的。近年来，处方兴奋剂如Adderall和Ritalin的使用引起了关注，特别是在寻求增强认知表现的学生和专业人士中。这些药物通常用于治疗多动症，但有时被没有这些诊断的人滥用。虽然它们可以改善注意力并减少冲动，但滥用可能导致严重的健康风险，包括依赖性和心血管问题。这引发了关于在学术或专业环境中使用兴奋剂以获得优势的伦理问题。能量饮料的兴起是与兴奋剂相关的另一个现象。这些饮料通常含有高水平的咖啡因、糖和其他承诺增加能量和警觉性的添加剂。虽然它们可能提供快速的提升，但成分的组合可能导致健康并发症，包括心悸、焦虑和消化问题。消费者在选择消费这些产品时必须谨慎并意识到他们所摄入的内容。总之，兴奋剂在现代社会中发挥着重要作用，带来了好处和风险。无论是咖啡因、尼古丁、处方药还是能量饮料，理解这些物质如何影响我们的身体和思想至关重要。虽然它们可以增强生产力和警觉性，但对兴奋剂的依赖可能导致负面的健康结果。因此，必须谨慎和自觉地对待它们的使用，确保在追求生产力和健康之间保持良好的平衡。