1
annulus of + noun
The annulus of the tree trunk indicates its age.
树干的年轮显示出它的年龄。
环；环形物
annuli — plural of annulus
先理解核心含义，再看它在真实句子里的用法。
环；环形物
a ring-shaped or toroidal form
The annulus of the tree trunk indicates its age.
树干的年轮显示出它的年龄。
环形或甜甜圈形的区域、物体或结构。
A ring- or donut-shaped area, object, or structure.
环形体
a toroidal shape
纤维组织环；特别是(心脏病学)心脏瓣膜开口周围的环,瓣膜小叶和心房心室的肌纤维附着于此；心脏纤维环。
A ring of fibrous tissue; specifically (cardiology), such a ring around an opening of a heart valve, to which the valve leaflets and muscle fibres of the atria and ventricles are attached; an annulus fibrosus cordis.
(真菌)成熟蘑菇上围绕茎部如领圈的部分帷幕残余
(Fungi) a remnant of the partial veil that in mature mushrooms surrounds the stem like a collar
The engineer measured the outer diameter of the annulus before installing the seal.
工程师在安装密封件之前测量了环形物的外径。
The children drew colorful annuluses on the pavement with chalk.
孩子们用粉笔在人行道上画了彩色的环形图案。
A rubber annulus around the pipe prevents water from leaking out.
管道周围的橡胶环可以防止漏水。
The annulus of the tree trunk indicates its age.
树干的年轮显示出它的年龄。
常用于机械或工程语境。
The annulus between the two pipes ensures a tight seal.
两个管道之间的环形缝隙确保了紧密的密封。
The annulus that surrounds the galaxy is composed of dark matter.
环绕星系的那个环由暗物质组成。
Not this
annulus ring
Use this
annular ring
中文常直接使用名词作定语，但英语中表示'环状的'应使用形容词annular。
Not this
This is annulus shape.
Use this
This is an annulus shape.
中文没有冠词概念，学习者易遗漏不定冠词an，但annulus作为可数名词单数需要冠词。
Choose the next layer that will help you use annuli with more confidence.
Recommended next
Missing: Collocations
Complete this area with collocations.
Includes Context & register & Memory tip
Analyze the context and learn memory tricks to remember it.
More ways to explore
Includes Synonyms & Antonyms
Expand your vocabulary with synonyms and antonyms.
Includes Spelling & sound
Explore words with similar spelling endings or sounds.
Includes Word components & Thematic vocabulary
Learn how to build related words using roots, prefixes, and thematic clusters.
Includes Idioms & Cultural references
Discover idioms, slang, and famous pop culture quotes.
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
Use annuli naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
可数名词，指环状物或环形结构。
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.