Isotope是由同种元素的原子构成的若干种不同的形式，其中原子的质量数相同但原子核内的中子数不同。它是化学和物理学中经常用到的一个词汇，下面从四个方面进行详细介绍：
1.定义和背景
Isotope一词来源于希腊语Isos（相等）和topos（位置）两个词，意为具有相等位置的原子。早在xx年，英国化学家Frederick Soddy就提出了这个概念。
2.应用领域
Isotope在许多领域得到了广泛的应用，包括核能、医学、地球科学、天文学以及环境科学等。
3.分类和表示法
Isotope可以根据其中子数来进行分类，常用缩写法表示，如氢的三种同位素分别表示为：
- 普通氢：^1H
- 氘：^2H
- 氚：^3H
4.常见示例
以下是一些常见的示例：
- Carbon-14 is a radioactive isotope used in dating ancient artifacts.（碳14是一种放射性同位素，用于测定古代文物的年代。）
- Scientists use isotopes to study the migration patterns of birds.（科学家利用同位素研究鸟类的迁徙模式。）
- The patient received a PET scan, which uses isotopes to detect cancer cells.（患者接受了PET扫描，该扫描使用同位素来检测癌细胞。）
- Uranium-235 is a fissionable isotope used in nuclear reactors.（235是一种可的同位素，用于核反应堆中。）
- Hydrogen-2, also known as deuterium, is used in nuclear magnetic resonance imaging (MRI).（氢2，也称为重水，用于核磁共振成像（MRI）中。）
isotope的中文翻译为同位素。读音为 [‘a?s?t??p]。
例句：
1. Carbon-14 is an isotope of carbon that is commonly used in radiocarbon dating.
碳-14是一种常用于放射性碳测定的碳同位素。
2. Some isotopes are radioactive and can be harmful to living organisms.
一些同位素具有放射性，可能对生物有害。
isotope在中文中有”物同位素、同位素体化合物”的意思，在英美地区还有”同位素”的意思，在线读音是[‘ais?ut?up]，isotope常被用作名词，在《英语汉语大辞典》中，共找到47个与isotope相关的例句。
1.物同位素
例句:Thus, more of the heavy isotope is left behind in the ocean and absorbed by marine organisms. (因此，更多的重氧同位素留在了海洋里，并被海洋有机物吸收。)
2.同位素体化合物
例句:Geochemical characteristics and isotope dating of moyite at the southeastern margin of the Kuruktag block, Xinjiang, China (新疆库鲁克塔格地块东南缘钾长花岗岩的地球化学特征及同位素测年)
3.同位素
例句:A synthetic element produced in trace quantities by helium isotope bombardment of curium. (一种合成元素，由氦同位素轰击锔可得到微量的这种元素。)
4.同位素 、同位素
例句:From the study of sulfur isotope, I know that it is muti-mineralize feature , and mainly comes from magma sulfur . (翻译:对硫同位素研究显示出多期矿化特征，但硫源则均以岩浆硫为主。)
isotope一般作为名词使用，如在dilution isotope(稀释同位数)、dyspprosium isotope([核] 镝同位素)、environmental isotope(环境同位素)等常见短语中出现较多。
dilution isotope稀释同位数dyspprosium isotope[核] 镝同位素environmental isotope环境同位素erbium isotope[核] 铒同位素enhanced isotope浓缩的同位素enriched isotope浓缩同位素,富集同位素even isotope偶同位素einsteinium isotope[核] 锿同位素exciting isotope激发的同位素1. A synthetic element produced in trace quantities by helium isotope bombardment of curium. (翻译:一种合成元素，由氦同位素轰击锔可得到微量的这种元素。)
2. From the study of sulfur isotope, I know that it is muti-mineralize feature , and mainly comes from magma sulfur . (翻译:对硫同位素研究显示出多期矿化特征，但硫源则均以岩浆硫为主。)
3. Sr and Nd isotope tracer implications for element migration path during formation of Dexing porphyry copper deposit, Jiangxi province (翻译:锶、钕同位素对德兴斑岩铜矿元素迁移的示踪)
4. From the study of sulfur isotope, I know that it is muti-mineralize feature, and mainly comes from magma sulfur. (翻译:对硫同位素研究显示出多期矿化特征，但硫源则均以岩浆硫为主。)
5. Environmental isotope study of the groundwater resources in the North Wulan-Buhe desert, Inner Mongolia (翻译:乌兰布和沙漠北部地下水资源的环境同位素探讨)
6. Isotope geochemistry and metallogenic model of gold and silver polymetal ore deposits in the Wutaishan-Hengshan region (翻译:五台山-恒山一带金、银多金属矿床同位素地球化学及其成矿模型)
7. However, there is a very attractive reaction between deuterium and a light isotope of helium known as helium-3. (翻译:无论如何，在氘和一个氦的轻同位素也就是氦-3之间有一种吸引人的反应。)
8. Carbon isotope composition of buried plant tissues in Ngoring shallow frozen lacustrine sediments (翻译:鄂陵湖浅层冻结湖相沉积物中埋藏植物屑稳定碳同位素组成特征)
9. According to the characteristics of trace elements and isotope, the source of the basalt is similar to the OIB source. (翻译:微量元素和同位素特征显示，玄武岩起源于与洋岛玄武岩源区相似的富集地幔源。)
10. This is the DEUT ERIUM PLANT, an automated facility for extracting the heavy isotope of hydrogen from the local water supply. (翻译:实际上这是个加工厂一个全自动化的设施通过来从当地水源中提取氢气的重同位素来生产氘气。)
11. And the heavier oxygen from a natural process that left more of the light isotope in the part of the nebula that made the sun. (翻译:重量较大的氧来自某种自然过程，在此过程中，大部分的轻同位素留在了形成太阳的部分星云中。)
12. A synthetic element produced in trace quantities by helium isotope bombardment of curium. (翻译:锎一种合成元素，由氦同位素轰击锔可得到微量的这种元素。)
13. Isotope Geochemistry and Ore Genesis of the Qiyugou Gold Deposit, Henan: a Synthesis (翻译:河南祁雨沟金矿同位素地球化学和矿床成因分析)
14. Application of Isotope Tracer in Steamflood Inter-well Tracer Test of the Oil Field (翻译:同位素示踪剂在油田蒸汽驱井间示踪测试中的应用)
15. Measuring the Solid Content in Pulp Material of Aluminum Hydroxide by Using Isotope Densometer (翻译:应用同位素密度计在线测量氢氧化铝料浆中的固含)
isotope作为名词的时候，其近义词以及反义词有s、isotopes等。
