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a diatom
diatom 是可数名词，指单个个体时用 a 或 an 限定。
A diatom is a microscopic alga with a silica cell wall.
硅藻是一种具有硅质细胞壁的微型藻类。
硅藻
diatoms — plural of diatom
先理解核心含义，再看它在真实句子里的用法。
硅藻
microscopic unicellular marine or freshwater alga with cell walls impregnated with silica
A diatom is a microscopic alga with a silica cell wall.
硅藻是一种具有硅质细胞壁的微型藻类。
Any of a group of minute unicellular algae having a siliceous covering of great delicacy, now categorized as class Diatomophyceae or division Bacillariophyta.
A molecule composed of two atoms of the same element; a homonuclear diatomic molecule.
细胞壁含二氧化硅的微小单细胞海洋或淡水群体藻类
microscopic unicellular marine or freshwater colonial alga having cell walls impregnated with silica
Diatoms are a major food source for tiny marine animals.
硅藻是微小海洋动物的主要食物来源。
She studied the glassy shells of diatoms under her school microscope.
她在学校显微镜下研究了硅藻的玻璃状外壳。
Some diatoms drift freely while others attach to rocks or plants.
有些硅藻自由漂浮，另一些则附着在岩石或植物上。
diatom 是可数名词，指单个个体时用 a 或 an 限定。
A diatom is a microscopic alga with a silica cell wall.
硅藻是一种具有硅质细胞壁的微型藻类。
指硅藻这一类生物时常用复数形式 diatoms 泛指。
Diatoms live in both marine and freshwater environments.
硅藻生活在海洋和淡水环境中。
diatom 可直接作定语修饰名词，如 diatom species（硅藻物种）。
Scientists have identified many diatom species in this estuary.
科学家们在这个河口识别出许多硅藻物种。
Not this
Diatom is a single-celled organism.
Use this
A diatom is a single-celled organism.
diatom 是可数名词，单数形式前必须加冠词 a；中文没有冠词，所以容易漏掉。
Not this
There are many diatom in the water.
Use this
There are many diatoms in the water.
diatom 是可数名词，表示复数时需加 -s；中文名词没有复数变化，所以学习者容易遗漏。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
硅藻水华；硅藻大量繁殖
A diatom bloom can turn the water reddish brown.
硅藻水华能使水变成红棕色。
硅藻的矽质壳
A diatom frustule has a beautiful, intricate pattern.
硅藻的矽质壳有美丽而复杂的图案。
硅藻细胞壁
A diatom cell wall is composed of two overlapping halves.
硅藻细胞壁由两个重叠的半片组成。
海洋硅藻
Marine diatoms are a major source of food for ocean life.
海洋硅藻是海洋生物的主要食物来源。
硅藻化石
Diatom fossils are often found in lake sediments.
硅藻化石常见于湖泊沉积物中。
Use diatoms naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
diatom 开头 di 像'滴'，一滴水里就有无数硅藻；它们的硅质外壳像透明玻璃小盒。
语域：formal 常见场景：biology class、oceanography research、science articles diatom 是专业术语，通常用于生物学、海洋学等学术或科普语境，日常口语中较少使用。
diatoms
Dictionary facts from ECDICT, WIKTIONARY.