A1 noun 中性 #2,731 最常用

放射

hōsha /hoːɕa/

The process of sending out light, heat, or energy in the form of waves or particles from a central source. It is most commonly used in scientific contexts to describe radiation or how light spreads out in all directions.

例句

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1

太陽は光と熱を放射しています。

The sun is emitting light and heat.

2

この物質は一定の割合でエネルギーを放射する。

This substance emits energy at a constant rate.

3

光が放射状に広がって、すごくきれいだよ。

The light is spreading out in a radial pattern; it's really beautiful.

词族

名词
放射
Verb
放射する
副词
放射状に
形容词
放射状の
相关
放射能
💡

记忆技巧

Visualize the kanji: 放 (release) + 射 (shoot/arrow). It is like 'releasing arrows' of light in every direction.

快速测验

太陽は強いエネルギーを____している。

正确!

正确答案是: 放射

例句

1

太陽は光と熱を放射しています。

everyday

The sun is emitting light and heat.

2

この物質は一定の割合でエネルギーを放射する。

formal

This substance emits energy at a constant rate.

3

光が放射状に広がって、すごくきれいだよ。

informal

The light is spreading out in a radial pattern; it's really beautiful.

4

熱放射の基本原理について説明しなさい。

academic

Explain the basic principles of thermal radiation.

5

放射線量の測定結果を報告書にまとめました。

business

I have compiled the radiation dose measurement results into a report.

词族

名词
放射
Verb
放射する
副词
放射状に
形容词
放射状の
相关
放射能

常见搭配

放射線 radiation (rays)
放射状に広がる to spread out radially
放射性物質 radioactive substance
熱放射 thermal radiation
放射冷却 radiative cooling

常用短语

放射状に広がる

to spread out in all directions from a center

放射線を浴びる

to be exposed to radiation

放射能汚染

radioactive contamination

容易混淆的词

放射 vs 放射能

Housha is the act of emitting energy/rays; houshanou is the ability or property of a substance to emit radiation.

📝

使用说明

While it sounds scientific, it is frequently used with the suffix '~状' (jou) to describe patterns that look like a starburst or spokes on a wheel.

⚠️

常见错误

Many learners confuse '放射' (emission) with '照射' (irradiation/shining light onto something). Remember 'hou' is to release out.

💡

记忆技巧

Visualize the kanji: 放 (release) + 射 (shoot/arrow). It is like 'releasing arrows' of light in every direction.

📖

词源

From Middle Chinese, combining '放' (to let go/release) and '射' (to shoot/archery).

语法模式

Noun + する (to emit/radiate) Noun + 状 (radial shape)
🌍

文化背景

In modern Japan, this word is often associated with discussions about nuclear energy and safety protocols since 2011.

快速测验

太陽は強いエネルギーを____している。

正确!

正确答案是: 放射

相关词

台風

A1

A large, powerful tropical cyclone that occurs in the Northwest Pacific Ocean, bringing heavy rain and strong winds. In Japan, they occur most frequently between July and October and are identified by numbers rather than names in daily news reporting.

竜巻

A1

A violent, rotating column of air extending from a thunderstorm to the ground, often visible as a funnel-shaped cloud. In Japanese, the name literally means 'rolling dragon,' describing its swirling appearance as it ascends to the sky.

洪水

A1

A flood refers to an overflow of a large amount of water beyond its normal limits, especially over what is normally dry land. It is commonly used to describe natural disasters caused by heavy rain or overflowing rivers.

干ばつ

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A prolonged period of abnormally low rainfall leading to a shortage of water. It is used to describe the environmental state and its resulting impact on agriculture and water supply.

疫病

A1

An infectious disease or epidemic that spreads widely and rapidly among a population. It often refers to large-scale outbreaks and carries a historical or serious clinical nuance.

伝染

A1

The process of a disease or feeling spreading from one person to another through contact or influence. It can refer to biological infections or the metaphorical spread of emotions like laughter or panic.

感染

A1

Infection refers to the process where viruses or bacteria enter the body and multiply. It is also used metaphorically for the spread of emotions, computer viruses, or habits.

免疫

A1

Immunity refers to the body's ability to resist a particular infection or toxin via specific antibodies or sensitized white blood cells. It can also be used metaphorically to describe a state of being unaffected by something unpleasant because of previous exposure.

抗体

A1

An antibody is a protective protein produced by your immune system to fight off harmful substances like viruses or bacteria. It acts like a specialized soldier that remembers specific germs to prevent you from getting sick from the same thing twice.

細菌

A1

Microscopic single-celled organisms that can be found everywhere, including inside the human body. While some cause diseases, many are beneficial for health and the environment.

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