radioactive

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数据源: ai_enrichment
放射性的是指物质能够自发地释放出辐射,如α粒子、β粒子或γ射线,通常与核反应或衰变相关。

用法要点

形容词用法

通常用作定语形容词,修饰名词,描述物质或区域具有放射性特性。

• radioactive material
• radioactive waste
• radioactive zone

介词搭配

常与介词'with'连用,表示'含有放射性物质',或与'from'连用表示'来自放射性源'。

• contaminated with radioactive particles
• radiation from radioactive decay

语域说明

主要用于科学、医学、环境和技术语境,在正式或专业场合使用,日常对话中较少见。

• nuclear physics research
• medical imaging techniques
• environmental cleanup efforts

基础例句

The doctor said the X-ray machine uses a small amount of radioactive material.

医生说X光机使用少量放射性物质。

We need to avoid that area because it might be radioactive after the accident.

我们需要避开那个区域,因为事故后它可能有放射性。

Some old watches have radioactive paint on the dials, which can be dangerous.

一些旧手表的表盘上有放射性涂料,这可能很危险。

The geiger counter beeped loudly, indicating high radioactive levels.

盖革计数器大声作响,表明放射性水平很高。

高级例句

The research paper analyzes the radioactive decay rates of uranium isotopes in geological samples.

这篇研究论文分析了地质样本中铀同位素的放射性衰变率。

International regulations require strict containment protocols for transporting radioactive medical supplies.

国际法规要求运输放射性医疗用品时采取严格的密封协议。

The nuclear power plant implemented enhanced safety measures to prevent radioactive leakage into the environment.

核电站实施了加强的安全措施,以防止放射性物质泄漏到环境中。

In astrophysics, radioactive elements are used to date celestial events and stellar formations.

在天体物理学中,放射性元素被用于确定天体事件和恒星形成的时间。

高频搭配

verb

become radioactiveemit radioactive particlescontain radioactive elementshandle radioactive materialsdispose of radioactive waste

adjective

highly radioactiveslightly radioactivenaturally radioactiveartificially radioactiveradioactive contamination

noun

radioactive isotoperadioactive decayradioactive falloutradioactive sourceradioactive exposure

adverb

extremely radioactivepotentially radioactiveinherently radioactive

preposition

radioactive with strontium-90protection from radioactive emissionsrisk of radioactive leakage

phrase

radioactive half-liferadioactive dating methodradioactive warning signradioactive shielding

常见错误

❌ 错误:This rock is radiation.
✓ 正确:This rock is radioactive.

'radiation'是名词,指辐射本身;'radioactive'是形容词,描述具有辐射特性的物质。应使用形容词形式。

❌ 错误:The waste has radioactive.
✓ 正确:The waste is radioactive.

'radioactive'是形容词,不是名词,不能直接跟在'has'后面。应使用'be'动词连接,如'is radioactive'。

近义词辨析

radiant

'radiant'通常指发出光或热,如阳光或温暖,强调明亮或温暖的感觉;而'radioactive'特指核辐射,与放射性衰变相关,常带有危险含义。

The sun is radiant (emits light and heat), but uranium is radioactive (emits harmful radiation).

irradiated

'irradiated'指被辐射照射过,可能已改变性质但不一定自身具有放射性;'radioactive'指物质本身能持续发出辐射。

Food can be irradiated to kill bacteria (treated with radiation), but it doesn't become radioactive (it doesn't emit radiation itself).