nuc
leus
复数形式
nuclei
1
细胞核, 核
(biology) the part of a cell that contains most of the genetic information
- The nucleus of a cell contains genetic material in the form of DNA, which regulates cellular activities.
细胞的核含有DNA形式的遗传物质，调节细胞活动。
- The nucleus is surrounded by a double membrane called the nuclear envelope, which controls the passage of materials into and out of the nucleus.
细胞核被一层称为核膜的双层膜包围，控制物质进出细胞核。
- Within the nucleus, there is a dense region called the nucleolus, where ribosomal RNA (rRNA) is synthesized and assembled into ribosomes.
在细胞核内，有一个密集的区域称为核仁，在那里核糖体RNA（rRNA）被合成并组装成核糖体。
- The nucleus plays a crucial role in cell division, as it coordinates the replication and distribution of genetic material to daughter cells.
细胞核在细胞分裂中起着至关重要的作用，因为它协调遗传物质的复制和分配到子细胞。
- Mutations in genes within the nucleus can lead to genetic disorders and diseases, affecting the normal function of cells and tissues.
细胞核内基因的突变可导致遗传性疾病和疾病，影响细胞和组织的正常功能。
同义词：
2
核心, 中心
a central or most important group within a larger organization, often responsible for leadership or key decisions
- The nucleus of the team consisted of senior engineers who led the development process.
团队的核心由领导开发过程的高级工程师组成。
- The political nucleus of the movement pushed for major reforms in the education system.
该运动的政治核心推动了教育系统的重大改革。
- The nucleus of the project team worked around the clock to meet the deadline.
项目团队的核心为赶在截止日期前完成任务而日夜工作。
- The nucleus of the committee met regularly to discuss the organization's future direction.
委员会核心定期开会讨论组织的未来方向。
- The company's nucleus of innovative thinkers helped shape its cutting-edge technology.
公司创新思想家的核心帮助塑造了其尖端技术。
同义词：
3
the dense, positively charged core of an atom, made up of protons and neutrons and containing most of the atom's mass
- The nucleus contains nearly all the mass of an atom.
- Scientists studied how electrons orbit the atomic nucleus.
- The fusion of two nuclei releases enormous amounts of energy.
- Radioactive decay alters the composition of an unstable nucleus.
- Hydrogen has the simplest nucleus, consisting of only one proton.
4
a distinct cluster of nerve cells within the brain or spinal cord that performs a specific function
- The hypothalamic nucleus regulates hunger and body temperature.
- Damage to the caudate nucleus can affect movement control.
- Neural signals pass through the cochlear nucleus before reaching the brainstem.
- Researchers mapped the nucleus responsible for emotional processing.
- Each nucleus in the brainstem has a specialized sensory or motor role.
5
the dense central region of the eye's lens, surrounded by the softer cortex
- The lens nucleus becomes cloudy with age, leading to cataracts.
- The surgeon carefully removed the hardened nucleus during the procedure.
- In young eyes, the lens nucleus remains soft and flexible.
- The outer cortex protects the inner nucleus of the lens.
- The opacity was limited to the nucleus, sparing the lens periphery.
同义词：
6
核, 核心
the central core of a comet, which is composed of ice, dust, and rocky materials
- The nucleus of Comet Hale-Bopp is believed to be several kilometers in diameter.
据信，海尔-波普彗星的核直径有几公里。
- The nucleus of a comet contains volatile substances that vaporize when the comet approaches the Sun, creating its characteristic tail.
彗星的核含有挥发性物质，当彗星接近太阳时会蒸发，形成其特有的尾巴。
- The nucleus of Comet Halley is thought to be a mixture of water ice, carbon dioxide ice, and various organic compounds.
哈雷彗星的核被认为是水冰、二氧化碳冰和各种有机化合物的混合物。
- As a comet approaches the Sun, the heat causes the nucleus to release gas and dust, forming a glowing coma and tail.
当彗星接近太阳时，热量导致核释放气体和尘埃，形成发光的彗发和尾巴。
- The nucleus of Comet Wild 2 was probed by the Stardust mission, which collected samples that offered clues about the origins of our solar system.
Wild 2彗星的核被星尘任务探测，收集了提供关于我们太阳系起源线索的样本。
7
the central sound unit of a syllable, usually formed by a vowel or vowel-like element, around which other sounds cluster
A nucleus is the central part of a syllable, usually consisting of a vowel sound. It serves as the core around which the rest of the syllable is built, and it is essential for the syllable's structure. For example, in the word "cat," the nucleus is the "a" sound, while in "beat," the nucleus is the "ea" sound. The nucleus is important in phonetics because it contributes to the overall sound and rhythm of speech, playing a key role in how syllables are formed and how words are pronounced in various languages.
- In the word "cat," the vowel /æ/ serves as the syllable's nucleus.
- Every syllable must have a nucleus to be pronounceable.
- The linguist analyzed how nasals can occasionally act as syllable nuclei.
- Stress typically falls on the nucleus of the syllable in English words.
- The nucleus distinguishes syllabic peaks from surrounding consonants.