A1 noun 中性 #3,265 最常用

電波

denpa /dempa/

Refers to electromagnetic waves used for wireless communication, such as radio, television, and mobile phone signals. In daily life, it is most commonly used to describe the strength or presence of a cell phone signal or Wi-Fi reception.

例句

3 / 5
1

ここは電波が弱いです。

The signal is weak here.

2

電波の状態を確認してから、もう一度お電話ください。

Please check the signal status and call back again.

3

うわ、電波一本しかない!

Whoa, I only have one bar of signal!

词族

名词
電波
Verb
電波を発する
相关
電子
💡

记忆技巧

Visualize the kanji: 電 (electricity) + 波 (wave). It's literally 'electric waves' traveling through the air to your phone.

快速测验

地下にいるので、___が全然入りません。

正确!

正确答案是: a

例句

1

ここは電波が弱いです。

everyday

The signal is weak here.

2

電波の状態を確認してから、もう一度お電話ください。

formal

Please check the signal status and call back again.

3

うわ、電波一本しかない!

informal

Whoa, I only have one bar of signal!

4

電波は真空を直進する性質を持っています。

academic

Radio waves have the property of traveling in a straight line through a vacuum.

5

電波障害の影響で、システムが一時停止しました。

business

The system was temporarily suspended due to signal interference.

词族

名词
電波
Verb
電波を発する
相关
電子

常见搭配

電波が入る to get reception
電波が悪い bad reception / poor signal
電波が届く signal reaches / to be within range
電波を遮断する to block signals
電波時計 radio-controlled clock

常用短语

電波が届かない

out of service area

電波ジャック

hijacking a broadcast

電波系

slang for a person who acts weird or eccentric (as if receiving strange signals)

容易混淆的词

電波 vs 電気

Denki means electricity/power, whereas denpa refers specifically to wireless signals or radio waves.

電波 vs 電流

Denryuu is electric current flowing through a wire, not wireless waves.

📝

使用说明

Use this word when talking about your phone's signal bars or why your internet is slow. It is a very common word in modern Japan due to the ubiquity of smartphones.

⚠️

常见错误

Learners often say 'denki ga nai' (no electricity) when they want to say 'denpa ga nai' (no signal). Remember that denki is for light bulbs and batteries, while denpa is for connections.

💡

记忆技巧

Visualize the kanji: 電 (electricity) + 波 (wave). It's literally 'electric waves' traveling through the air to your phone.

📖

词源

A Sino-Japanese compound word consisting of 電 (electricity) and 波 (wave).

语法模式

Used as a subject with particles が or は Often followed by verbs of existence (ある/ない) or movement (入る/届く)
🌍

文化背景

In Japan, 'Denpa-on' or 'Denpa-kei' is a subculture term for people who claim to hear voices or act strangely, a metaphor for receiving unseen radio waves.

快速测验

地下にいるので、___が全然入りません。

正确!

正确答案是: a

相关词

協力

A1

Cooperation or collaboration where two or more people combine their efforts to achieve a common goal. It is used in both personal and professional settings to describe working together as a team or providing assistance.

提案

A1

A suggestion or proposal of a plan or idea for others to consider. It is used in both casual conversations and professional meetings to introduce a potential course of action.

輸出

A1

The act of sending goods or services produced in one country to another country for sale or trade. In Japanese, it functions as a noun and a suru-verb, representing the 'exit' of products from a domestic market.

輸入

A1

The act of bringing goods, services, or materials into a country from abroad for sale or use. In Japanese, it functions as a noun or can be combined with 'suru' to become a verb meaning 'to import'.

資源

A1

Shigen refers to valuable materials or assets, such as natural minerals, energy sources, or human talent, that can be used for production or survival. It is widely used in economics, environmental science, and daily life to describe both raw materials and abstract wealth.

保護

A1

The act of keeping someone or something safe from harm, damage, or loss by providing care or creating boundaries. It is a versatile term in Japanese used for social welfare, environmental conservation, and digital security.

観察

A1

Observation is the act of watching someone or something carefully in order to gain information or understand a process. It is frequently used in scientific studies, nature analysis, and describing the act of paying close attention to details.

競争

A1

Kyousou refers to the act of competing or vying with others to achieve a goal, win a prize, or establish superiority. It is a versatile term used in sports, business, and academics to describe both structured contests and general rivalry.

拡大

A1

The act of making something larger in size, scale, or scope. It is frequently used for physical enlargement (like a photo) or abstract growth (like a business or a problem).

製造

A1

The process of making or producing goods, typically on a large scale using machinery. It refers specifically to industrial manufacturing rather than making things by hand on a small scale.

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