1
an atom of + [uncountable noun]
用于表示极少量，常用于否定句。
There's not an atom of truth in his story.
他的故事里没有一丝真话。
原子
先理解核心含义，再看它在真实句子里的用法。
原子
the smallest component of an element having the chemical properties of the element
There's not an atom of truth in his story.
他的故事里没有一丝真话。
保持化学元素性质的最小物质单位,现已知由原子核及绕核电子组成。
The smallest possible amount of matter which still retains its identity as a chemical element, now known to consist of a nucleus surrounded by electrons.
(物理和化学)具有元素化学性质的最小组成部分
(physics and chemistry) the smallest component of an element having the chemical properties of the element
希腊哲学家设想的终极且不可分割的物质粒子。
A hypothetical particle posited by Greek philosophers as an ultimate and indivisible component of matter.
(非专业用法)极小的一片
(nontechnical usage) a tiny piece of anything
A water molecule contains two hydrogen atoms and one oxygen atom.
一个水分子含有两个氢原子和一个氧原子。
In chemistry class, we learned that an atom is the smallest unit of an element.
在化学课上，我们学到原子是元素的最小单位。
Scientists have photographed a single atom using a special microscope.
科学家用特殊显微镜拍下了一个单独的原子。
用于表示极少量，常用于否定句。
There's not an atom of truth in his story.
他的故事里没有一丝真话。
固定短语，指核裂变。
Scientists split the atom in the early 20th century.
科学家在20世纪初分裂了原子。
描述原子结构的基本句式。
An atom consists of a nucleus and electrons.
原子由原子核和电子组成。
Not this
The water atoms into hydrogen and oxygen.
Use this
The water splits into atoms of hydrogen and oxygen.
atom 是名词，不能用作动词。这里应使用动词 split 或 decompose 来表达分解为原子。
Not this
There is not much atom in this substance.
Use this
There are not many atoms in this substance.
atom 是可数名词，不能用 much 修饰，而应用 many 表示复数数量。
Not this
We studied the atom structure.
Use this
We studied the atomic structure.
描述结构时应使用形容词 atomic，而非名词 atom。原子结构是固定搭配。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
原子弹
The development of the atom bomb changed warfare forever.
原子弹的研制永远改变了战争方式。
原子粉碎机
Scientists use an atom smasher to study subatomic particles.
科学家使用原子粉碎机来研究亚原子粒子。
碳原子
Each carbon atom can form four bonds with other atoms.
每个碳原子可以与其他原子形成四个键。
一丝真相
Despite his lies, there was an atom of truth in his statement.
尽管他在撒谎，他的陈述中还有一丝真相。
一丝怀疑
She had not an atom of doubt about his honesty.
她对他的诚实没有丝毫怀疑。
一点也不，毫无
There is not an atom of truth in what he said.
他所说的话毫无真实性。
分裂原子
Scientists first split the atom in the 1930s.
科学家在20世纪30年代首次分裂了原子。
原子能的释放改变了除我们思维方式之外的一切。
The atom is the fundamental unit of matter in chemistry.
原子是化学中物质的基本单位。
梦见你，梦见我，梦见原子般的
The word 'atom' appears in many pop culture references.
单词'atom'出现在许多流行文化引用中。
Use atom naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆tip：联想"atom"发音像"阿汤姆"，想象汤姆是一个微小的原子。
“atom” 作为科技术语，多用于正式或学术语境，常见于物理、化学等专业领域。
这些单词拼写结尾都是'om'，但重读元音不同，所以不押韵。'random'和'phantom'重读元音同为/æ/，但后续辅音不同，属于近似押韵。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.