foreign substance

简明释义

杂质

英英释义

例句

1.During the inspection, the inspector noted a foreign substance 外来物质 on the production line.

在检查过程中，检查员注意到生产线上有一个foreign substance 外来物质。

2.Before conducting the experiment, ensure there are no foreign substances 外来物质 present in the equipment.

在进行实验之前，确保设备中没有foreign substances 外来物质。

3.The presence of a foreign substance 外来物质 in the food sample raised concerns about contamination.

食品样本中存在foreign substance 外来物质引发了对污染的担忧。

4.The patient was advised to avoid any products containing foreign substances 外来物质 that could trigger an allergic reaction.

医生建议患者避免任何含有foreign substances 外来物质的产品，以免引发过敏反应。

5.The lab technician found a foreign substance 外来物质 in the sample, which could affect the results.

实验室技术员在样本中发现了一个foreign substance 外来物质，这可能会影响结果。

作文

In the realm of science and health, the term foreign substance refers to any material that is not naturally found within a particular environment or organism. This can include chemicals, pollutants, or even biological agents that can disrupt normal functions. Understanding the implications of foreign substances is crucial in various fields such as medicine, environmental science, and food safety. For instance, in the medical field, the presence of a foreign substance in the human body can lead to adverse reactions. When we receive a vaccine, our bodies are introduced to a small amount of a foreign substance, which is designed to stimulate the immune system without causing disease. However, if a person has an allergic reaction to this foreign substance, it can result in serious health issues. Thus, healthcare professionals must carefully evaluate each patient's history to minimize the risks associated with these substances.In environmental science, the study of foreign substances is critical for assessing pollution levels. For example, heavy metals and plastics are considered foreign substances in ecosystems. Their presence can harm wildlife, disrupt food chains, and contaminate water supplies. Researchers often conduct studies to understand how these foreign substances affect biodiversity and ecosystem health. By identifying sources of pollution, scientists can work towards developing strategies to mitigate the impact of these harmful materials.Food safety is another area where the concept of foreign substances plays a significant role. Contaminants such as pesticides, additives, or pathogens can be classified as foreign substances in food products. Regulatory agencies like the FDA and the CDC monitor food supplies to ensure that these foreign substances do not pose a risk to consumers. For example, if a batch of spinach is found to contain high levels of a pesticide, it might be recalled to protect public health. This vigilance helps maintain the integrity of our food supply and ensures that what we consume is safe.Moreover, the presence of foreign substances is not limited to harmful materials alone. In some cases, beneficial substances can also be considered foreign. For example, probiotics introduced into the gut can improve digestion and overall health, despite being foreign substances to the body initially. This highlights the dual nature of foreign substances—they can be either detrimental or beneficial depending on their context and interaction with the host.In conclusion, the term foreign substance encompasses a wide range of materials that can have significant implications in various fields. Whether in medicine, environmental science, or food safety, understanding the nature of these substances is essential for ensuring health and safety. As we continue to explore our world, the challenge remains to manage and mitigate the effects of harmful foreign substances while harnessing the potential benefits of those that can contribute positively to our lives.

在科学和健康领域，术语foreign substance指的是在特定环境或生物体内不自然存在的任何材料。这可以包括化学物质、污染物，甚至是可能干扰正常功能的生物剂。理解foreign substances的影响对于医学、环境科学和食品安全等多个领域至关重要。例如，在医学领域，foreign substance在人体内的存在可能导致不良反应。当我们接种疫苗时，我们的身体会接触到少量foreign substance，旨在刺激免疫系统而不引起疾病。然而，如果一个人对这种foreign substance产生过敏反应，可能会导致严重的健康问题。因此，医疗专业人员必须仔细评估每位患者的病史，以尽量减少与这些物质相关的风险。在环境科学中，研究foreign substances对于评估污染水平至关重要。例如，重金属和塑料被视为生态系统中的foreign substances。它们的存在可能会危害野生动物，破坏食物链，并污染水源。研究人员通常进行研究，以了解这些foreign substances如何影响生物多样性和生态系统健康。通过识别污染源，科学家可以努力制定减轻这些有害材料影响的策略。食品安全是另一个foreign substances概念发挥重要作用的领域。农药、添加剂或病原体等污染物可以被归类为食品产品中的foreign substances。像FDA和CDC这样的监管机构监控食品供应，以确保这些foreign substances不会对消费者构成风险。例如，如果一批菠菜被发现含有高水平的某种农药，它可能会被召回以保护公众健康。这种警惕性有助于维护我们食品供应的完整性，并确保我们消费的食物是安全的。此外，foreign substances的存在并不仅限于有害材料。在某些情况下，有益物质也可以被视为foreign。例如，益生菌被引入肠道可以改善消化和整体健康，尽管它们最初是foreign substances。这突显了foreign substances的双重性质——它们可以是有害的，也可以是有益的，具体取决于它们的背景和与宿主的互动。总之，术语foreign substance涵盖了一系列可能在各个领域产生重大影响的材料。无论是在医学、环境科学还是食品安全领域，理解这些物质的性质对于确保健康和安全至关重要。随着我们继续探索我们的世界，挑战仍然是管理和减轻有害foreign substances的影响，同时利用那些能够为我们的生活带来积极贡献的物质的潜在好处。