radiocarbon + [noun]
radiocarbon 常直接修饰名词,如 analysis、age、measurement。
Radiocarbon analysis revealed the object's age.
放射性碳分析揭示了该物体的年代。
放射性碳;碳-14
先理解核心含义,再看它在真实句子里的用法。
放射性碳;碳-14
a radioactive isotope of carbon
Radiocarbon analysis revealed the object's age.
放射性碳分析揭示了该物体的年代。
碳的放射性同位素,尤指碳-14。
A radioactive isotope of carbon, especially 146C.
Scientists measure radiocarbon levels in ancient wood to determine its age.
科学家测量古木中的放射性碳含量,以确定其年代。
Radiocarbon dating is widely used in archaeology to date organic materials.
放射性碳测年在考古学中被广泛用于确定有机材料的年代。
The lab detected radiocarbon in the sample and confirmed that it was from the recent past.
实验室在样本中检测到放射性碳,并确认它来自近代。
radiocarbon 常直接修饰名词,如 analysis、age、measurement。
Radiocarbon analysis revealed the object's age.
放射性碳分析揭示了该物体的年代。
也可用主动式 date something by radiocarbon。
The ancient cloth was dated by radiocarbon to around 200 BC.
这块古代布料经放射性碳测年,年代约为公元前200年。
也可用 measure、detect 等动词与 radiocarbon 搭配。
Living organisms contain radiocarbon from the atmosphere.
生物体含有来自大气的放射性碳。
Not this
Scientists used radioactive carbon dating to determine the age of the fossil.
Use this
Scientists used radiocarbon dating to determine the age of the fossil.
radiocarbon 特指同位素碳-14,而 radioactive carbon 泛指任何放射性碳;在 dating 这个固定搭配中必须用 radiocarbon。中文把“放射性碳”逐字译成 radioactive carbon 是不地道的直译。
Not this
Radiocarbon's dating has revolutionized archaeology.
Use this
Radiocarbon dating has revolutionized archaeology.
radiocarbon 在这里是名词作定语直接修饰 dating,不需要所有格 ’s。英语中名词修饰名词用原形(如 radiocarbon dating),而不用名词所有格。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
放射性碳测年
Radiocarbon dating indicated the bones were over 10,000 years old.
放射性碳测年显示这些骨头的年代超过一万年。
放射性碳年龄
The radiocarbon age of the sample was determined in the laboratory.
该样本的放射性碳年龄已在实验室测定。
放射性碳年代
The radiocarbon dates from the layer are consistent with historical records.
该地层中的放射性碳年代与历史记录相符。
放射性碳分析
Radiocarbon analysis confirmed that the parchment was medieval.
放射性碳分析证实这份羊皮纸是中世纪的。
放射性碳法
The radiocarbon method is widely used in archaeology and geology.
放射性碳法广泛用于考古学和地质学。
放射性碳校正
Radiocarbon calibration curves help convert dates to calendar years.
放射性碳校正曲线有助于将年代转换为日历年份。
Use radiocarbon naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 radio(射线)和 carbon(碳)连起来:会发出射线的碳,就是放射性碳,即碳-14。
语域:formal 常见场景:考古学与地质学报告、化学/物理教科书 radiocarbon 是比较正式的科技用语,多用于学术或专业语境,如考古测年、地球化学等;日常口语中较少使用,可用 carbon-14 更直白。
在指不同放射性碳同位素时可用复数 radiocarbons。
Dictionary facts from ECDICT, WIKTIONARY.