bacterium
简明释义
n. 细菌
复 数 b a c t e r i a
英英释义
A bacterium is a single-celled microorganism that can exist either as an independent organism or as a parasite, and can be found in various environments. | 细菌是一种单细胞微生物，可以作为独立生物或寄生生物存在，并可以在各种环境中发现。 |
单词用法
醋细菌 |
同义词
反义词
| 病毒 | 病毒只能在宿主细胞内复制。 | ||
| 真核生物 | Eukaryotes are organisms with complex cells that contain a nucleus. | 真核生物是指细胞复杂且含有细胞核的生物。 |
例句
1.The technique is based on beta-glucuronidase, an enzyme from the bacterium Escherichia coli.
该技术基于β-葡糖醛酸糖苷酶（一种来自大肠杆菌的酶）。
2.He found the bacterium had a similar effect on the mice as an anti-depressive drug might.
他发现这种细菌对小鼠的作用与抗抑郁药物的作用相似。
3.The bacterium is spread by exhaled droplets.
细菌通过呼出的飞沫传播。
4.Lyme disease is caused by a bacterium transmitted to humans by deer ticks.
莱姆病是由鹿蜱传播给人类的一种细菌引起的。
5.He had a course of antibiotics to kill the bacterium.
他服了一疗程的抗生素来杀死细菌。
6.The bacterium Streptomyces coelicolor naturally produce antibiotics called prodiginines.
天蓝色链霉菌可产生名为灵杆菌素的抗生素。
7.Rickettsia is a bacterium which can cause many diseases that are transmitted by blood-sucking parasitic arthropods.
立克次氏体是一种细菌，这种细菌可引起多种疾病，并通过吸血节肢寄生动物传播。
8.However, certain other species on which the larvae feed do not harbor the bacterium.
然而，幼虫所食的某些其他物种却不存在这种细菌。
9.Scientists study how each bacterium interacts with its environment.
科学家研究每种细菌如何与其环境相互作用。
10.A single bacterium can multiply into millions in just a few hours.
一个单独的细菌在短短几小时内可以繁殖成数百万个。
11.The bacterium is responsible for causing the infection.
这种细菌是导致感染的原因。
12.Some bacterium strains are resistant to antibiotics.
一些细菌菌株对抗生素具有耐药性。
13.The presence of the bacterium in the water supply raised health concerns.
水源中出现这种细菌引发了健康担忧。
作文
The world of microorganisms is vast and fascinating, with one of the most significant groups being bacteria. A single cell organism, a bacterium (细菌), plays a crucial role in various ecological systems. They are found in almost every environment on Earth, from the deepest oceans to the highest mountains, and even within our own bodies. Understanding bacterium (细菌) is essential for appreciating their impact on life as we know it.Bacteria can be classified into two main categories: beneficial and harmful. Beneficial bacterium (细菌) are vital for processes such as digestion and nutrient cycling. For instance, the human gut hosts trillions of beneficial bacteria that aid in breaking down food and synthesizing essential vitamins. Without these helpful bacterium (细菌), our digestive system would struggle, leading to various health issues.On the other hand, harmful bacterium (细菌) can cause diseases and infections. Pathogenic bacterium (细菌) are responsible for illnesses such as strep throat, tuberculosis, and food poisoning. The study of these harmful bacterium (细菌) has led to significant advancements in medicine, including the development of antibiotics. However, the rise of antibiotic-resistant strains of bacterium (细菌) poses a serious threat to public health, highlighting the need for ongoing research and innovation in this field.The diversity of bacterium (细菌) extends beyond their roles in human health. In nature, they contribute to nutrient cycling and soil fertility. Certain bacterium (细菌) can fix nitrogen, converting atmospheric nitrogen into a form that plants can absorb. This process is essential for agriculture, as it enhances soil quality and promotes crop growth. Farmers often rely on these natural processes to reduce the need for chemical fertilizers, showcasing the importance of understanding bacterium (细菌) in sustainable farming practices.Moreover, bacterium (细菌) are also utilized in biotechnology. Scientists harness the capabilities of specific bacterium (细菌) to produce enzymes, biofuels, and even pharmaceuticals. For instance, genetically modified bacterium (细菌) are used to produce insulin for diabetes treatment, demonstrating the potential benefits of manipulating these microorganisms for human welfare.In conclusion, bacterium (细菌) are more than just tiny organisms; they are integral to our ecosystem, health, and technological advancements. By studying both beneficial and harmful bacterium (细菌), we can unlock new solutions to some of the world's most pressing challenges. As we continue to explore the microscopic world, the importance of bacterium (细菌) in shaping our lives will only become more apparent, underscoring the need for a deeper understanding of these remarkable microorganisms.
微生物的世界广阔而迷人，其中一个最重要的群体是细菌。单细胞生物，bacterium（细菌）在各种生态系统中扮演着至关重要的角色。它们几乎存在于地球上的每一个环境中，从最深的海洋到最高的山脉，甚至我们自己的身体内。理解bacterium（细菌）对于欣赏它们对生命的影响至关重要。细菌可以分为两大类：有益和有害。有益的bacterium（细菌）对消化和营养循环等过程至关重要。例如，人类肠道中寄居着数万亿的有益细菌，帮助分解食物并合成必需的维生素。如果没有这些有帮助的bacterium（细菌），我们的消化系统将会遭遇困难，导致各种健康问题。另一方面，有害的bacterium（细菌）则可能引起疾病和感染。致病性bacterium（细菌）是导致喉炎、结核病和食物中毒等疾病的罪魁祸首。对这些有害bacterium（细菌）的研究推动了医学的重大进展，包括抗生素的发展。然而，抗生素耐药性菌株的增加对公共健康构成了严重威胁，突显了这一领域持续研究和创新的必要性。bacterium（细菌）的多样性不仅限于它们在人类健康中的作用。在自然界中，它们促进营养循环和土壤肥力。某些bacterium（细菌）能够固定氮，将大气中的氮转化为植物可以吸收的形式。这个过程对农业至关重要，因为它提高了土壤质量，促进了作物生长。农民常常依赖这些自然过程来减少对化肥的需求，展示了理解bacterium（细菌）在可持续农业实践中的重要性。此外，bacterium（细菌）也被应用于生物技术。科学家利用特定bacterium（细菌）的能力来生产酶、生物燃料甚至药物。例如，基因改造的bacterium（细菌）用于生产糖尿病治疗所需的胰岛素，展示了操控这些微生物为人类福祉带来潜在益处的可能性。总之，bacterium（细菌）不仅仅是微小的生物；它们是我们生态系统、健康和技术进步的重要组成部分。通过研究有益和有害的bacterium（细菌），我们可以为解决一些世界上最紧迫的挑战打开新的解决方案。随着我们继续探索微观世界，bacterium（细菌）在塑造我们生活中的重要性将愈加明显，强调了对这些非凡微生物更深入理解的必要性。
