1
sulfur + noun
名词 sulfur 可直接修饰另一名词，表示“硫的、含硫的”，如 sulfur dioxide（二氧化硫）。
Sulfur compounds are responsible for the smell of rotten eggs.
硫化合物是臭鸡蛋气味的来源。
硫；硫磺
先理解核心含义，再看它在真实句子里的用法。
硫；硫磺
the chemical element with atomic number 16
Sulfur compounds are responsible for the smell of rotten eggs.
硫化合物是臭鸡蛋气味的来源。
A chemical element with atomic number 16, having a bright yellow color and characteristic smell, used commercially in a variety of products such as insecticides, black powder, and matchsticks.
一种丰富的无味无臭多价非金属元素；以黄色晶体最为人知；存在于许多硫化物和硫酸盐矿物中,甚至以天然形式存在(尤其在火山地区)
an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions)
A yellowish green colour, like that of sulfur.
Any of various pierid butterflies of the subfamily Coliadinae, especially the sulfur-coloured species.
The lab stored the sulfur in a sealed glass jar.
实验室把硫磺存放在密封的玻璃罐里。
When sulfur burns, it gives off a strong, sharp smell.
硫磺燃烧时会散发出强烈刺鼻的气味。
The volcano left yellow crystals of sulfur on the rocks.
火山在岩石上留下了黄色的硫磺晶体。
名词 sulfur 可直接修饰另一名词，表示“硫的、含硫的”，如 sulfur dioxide（二氧化硫）。
Sulfur compounds are responsible for the smell of rotten eggs.
硫化合物是臭鸡蛋气味的来源。
表示硫的自然存在位置时常用 be found in/around。sulfur 作物质名词通常不可数。
Sulfur is found around volcanic vents.
火山口附近有硫磺。
smell of sth 是常用结构，of 后接气味来源；也可说 have a strong sulfur smell。
The hot spring smells strongly of sulfur.
温泉有很浓的硫磺味。
表示硫的不同形态或同素异形体时用 forms of sulfur，如 rhombic sulfur（斜方硫）。
Yellow crystals are a common form of sulfur.
黄色晶体是硫的常见形态。
Not this
Sulfuric dioxide is harmful to the environment.
Use this
Sulfur dioxide is harmful to the environment.
二氧化硫的标准化学名是 sulfur dioxide，其中 sulfur 作名词定语；sulfuric 是形容词，只用于硫酸（sulfuric acid）等固定名称，不能用来修饰 dioxide。应按化学命名记忆固定搭配，不能类推。
Not this
The gas smells sulfur.
Use this
The gas smells of sulfur.
smell 表示“闻起来有……气味”时是不及物动词，不能直接接名词 sulfur 作宾语，而要用 smell of + 名词来表示气味来源。若说 smell sulfur，意思是主动去闻硫磺，而不是描述某物发出硫磺味。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
二氧化硫
Sulfur dioxide is released when fossil fuels are burned.
化石燃料燃烧时会释放二氧化硫。
硫化合物
The lab tested the water for sulfur compounds.
实验室检测了水中的硫化合物。
硫磺气味
The hot spring has a strong sulfur smell.
温泉有强烈的硫磺气味。
硫磺矿藏
The region is known for its natural sulfur deposits.
该地区以天然硫磺矿藏闻名。
火山硫磺
Volcanic sulfur can color the rocks bright yellow.
火山硫磺能使岩石变成亮黄色。
硫排放物
New regulations aim to reduce sulfur emissions from ships.
新法规旨在减少船舶的硫排放物。
那迷惑他们的魔鬼被扔进燃烧着硫磺的火湖里，在那里野兽和假先知也被扔了进去。
Sulfur is often associated with hell in Christian tradition.
在基督教传统中，硫磺常常与地狱联系在一起。
Use sulfur naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把化学符号 S 记成 sulfur 的开头：火山口旁堆着黄色硫磺，气味刺鼻。
语域：neutral 常见场景：chemistry lab、industrial production、volcanic geology sulfur 通常为中性词，多用于化学、工业和地质等专业场景，也常见于日常对气味或颜色的描述；正式与非正式场合均不突兀，没有明显文体限制。
No common words rhyme exactly with sulfur (/ˈsʌlfɚ/). Sulky, sullen, and sultry genuinely match the initial /sʌl/ sound, but they do not rhyme with the -lfer ending. Suffer, supper, and summer are useful lookalikes, but they lack the /l/ before /f/ and therefore sound different.
Dictionary facts from ECDICT, WIKTIONARY.