Word · CEFR A2 · Frequency #2687
shell
（动物等的）壳；甲壳
The hard outer covering of an animal such as a turtle, snail, or crab.
- 1.
A hard external covering of an animal.
动物的坚硬外壳
- 2.
ammunition consisting of a cylindrical metal casing containing an explosive charge and a projectile; fired from a large gun
由金属弹壳、炸药和弹头组成的弹药,用大型火炮发射。
- 3.
The hard calcareous covering of a bird egg.
鸟蛋的坚硬钙质外壳
- 4.
the material that forms the hard outer covering of many animals
构成许多动物坚硬外壳的物质。
- 5.
One of the outer layers of skin of an onion.
洋葱的外层皮
- 6.
hard outer covering or case of certain organisms such as arthropods and turtles
节肢动物和龟类等生物的坚硬外壳。
- 7.
The hard external covering of various plant seed forms.
各种植物种子的坚硬外壳
- 8.
The accreted mineral formed around a hollow geode.
围绕空心晶洞形成的矿物沉积
- 9.
The casing of a self-contained single-unit artillery projectile.
自成单元的炮弹外壳
- 10.
A hollow, usually spherical or cylindrical projectile fired from a siege mortar or a smoothbore cannon. It contains an explosive substance designed to be ignited by a fuse or by percussion at the target site so that it will burst and scatter at high velocity its contents and fragments. Formerly called a bomb.
从迫击炮或滑膛炮发射的空心弹丸,内含爆炸物,设计用于在目标处引爆
- 11.
The cartridge of a breechloading firearm; a load; a bullet; a round.
后膛枪的弹壳；子弹；一发
- 12.
Any slight hollow structure; a framework, or exterior structure, regarded as not complete or filled in, as the shell of a house.
任何轻微的空心结构；未完成的框架或外部结构,如房屋的外壳
- 13.
A garment, usually worn by women, such as a shirt, blouse, or top, with short sleeves or no sleeves, that often fastens in the rear.
通常为女性穿着的衣物,如衬衫、上衣,常为短袖或无袖,通常在后面扣合
- 14.
A coarse or flimsy coffin; a thin interior coffin enclosed within a more substantial one.
粗糙或薄弱的棺材；包在更坚固棺材内的薄内棺
- 15.
An unmarked vehicle for carrying corpses from a crime scene.
用于从犯罪现场运送尸体的无标记车辆
- 16.
A string instrument, as a lyre, whose acoustical chamber is formed like a shell.
声腔形状如贝壳的弦乐器,如里拉琴
- 17.
The body of a drum; the often wooden, often cylindrical acoustic chamber, with or without rims added for tuning and for attaching the drum head.
鼓的主体；通常为木制的圆柱形声学腔室,可能带有用于调音和固定鼓面的边缘。
- 18.
An engraved copper roller used in print works.
印刷厂中使用的雕刻铜辊。
- 19.
The thin coating of copper on an electrotype.
电铸版上的薄铜涂层。
- 20.
The watertight outer covering of the hull of a vessel, often made with planking or metal plating.
船体的防水外壳,通常由木板或金属板制成。
- 21.
The outer frame or case of a block within which the sheaves revolve.
滑轮内旋转的外框或外壳。
- 22.
A light boat whose frame is covered with thin wood, impermeable fabric, or water-proofed paper; a racing shell or dragon boat.
轻型船,其框架覆盖有薄木、不透水织物或防水纸；赛艇或龙舟。
- 23.
A set of atomic orbitals that have the same principal quantum number.
具有相同主量子数的一组原子轨道。
- 24.
The outward form independent of what is inside.
独立于内部的外在形式。
- 25.
The empty outward form of someone or something.
某人或某物的空外形。
- 26.
An emaciated person.
瘦弱的人。
- 27.
A person otherwise diminished.
其他方面有所减损的人。
- 28.
A psychological barrier to social interaction.
社交互动的心理障碍。
- 29.
An operating system software user interface, whose primary purpose is to launch other programs and control their interactions; the user's command interpreter. Shell is a way to separate the internal complexity of the implementation of the command from the user. The internals can change while the user experience/interface remains the same.
操作系统软件用户界面,主要用于启动其他程序并控制其交互；用户的命令解释器。Shell 是将命令的内部复杂性与用户分开的方式。内部可以改变,而用户体验/界面保持不变。
- 30.
A legal entity that has no operations.
没有运营的法律实体。
- 31.
A concave rough cast-iron tool in which a convex lens is ground to shape.
用于磨制凸透镜形状的凹面粗铸铁工具。
- 32.
A gouge bit or shell bit.
凿钻或壳钻。
- 33.
The onset and coda of a syllable.
音节的起始和尾音。
- 34.
In formal debating, a set of proposed rules to be followed, with set penalties for violating them.
在正式辩论中,一套需遵循的规则,并设定违反规则的惩罚。
蛋壳；炮弹；子弹；弹药筒；（洋葱等的）外皮；（种子、坚果的）外壳；（建筑物等的）框架；外壳；（晶洞的）外壳
In use
The turtle pulled its head inside its shell when I got close.
We found a pretty shell on the beach and put it in our bag.
Many sea animals use shells to protect their soft bodies.
Connections
Collocations
- sea shell
- 海贝壳
- She collected colorful sea shells on the beach.她在沙滩上收集了五颜六色的海贝壳。
- turtle shell
- 龟甲
- The turtle retreated into its shell for protection.乌龟缩进壳里以保护自己。
- egg shell
- 蛋壳
- Be careful not to crush the egg shell when peeling it.剥蛋壳时小心别把它弄碎。
- nut shell
- 坚果壳
- He used a nutcracker to break the hard nut shell.他用坚果钳敲开了坚硬的坚果壳。
- artillery shell
- 炮弹
- The soldiers loaded the artillery shell into the cannon.士兵们将炮弹装进大炮。
- shell casing
Learner notes
Memory Tip
壳（shell）像乌龟背上的房子，又像炮弹的铁衣。
Context & Register
语域混合：日常用语（如贝壳、外壳）、军事用语（如炮弹）、工业用语（如金属护套）。典型语境：生物学、烹饪、军事、工程。
Pronunciation & Spelling
All listed words rhyme with 'shell' (stressed vowel /ɛ/ followed by /l/). None of these are lookalikes that sound different.
High-value vocabulary
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Usage priority
Collins 词频等级为 3，建议结合例句记忆，而不是只背中文释义。
Learn the forms together
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 DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.