1
an antenna for [device]
指接收或发送信号的装置；可数名词，复数形式为 antennas。
He bought an antenna for the old radio.
他给那台旧收音机买了一根天线。
天线
先理解核心含义，再看它在真实句子里的用法。
天线
an electrical device that sends or receives radio or television signals
He bought an antenna for the old radio.
他给那台旧收音机买了一根天线。
昆虫、螃蟹或其他动物头部用于感知的附肢。
An appendage used for sensing on the head of an insect, crab, or other animal.
用于接收或发射电磁波并分别转换为电信号或从电信号转换的装置。
An apparatus to receive or transmit electromagnetic waves and convert respectively to or from an electrical signal.
直觉敏锐的能力。
The faculty of intuitive astuteness.
寡糖片段。
A fragment of an oligosaccharide
The storm damaged the antenna on our roof, so we lost the television signal.
风暴损坏了我们屋顶上的天线，因此我们失去了电视信号。
She attached a small antenna to her radio to improve the sound quality from distant stations.
她在收音机上装了一根小天线，以改善远方电台的音质。
Most new cars have their antennas built into the rear window instead of a separate rod.
大多数新车把天线内置在后窗上，而不是用一根单独的杆。
指接收或发送信号的装置；可数名词，复数形式为 antennas。
He bought an antenna for the old radio.
他给那台旧收音机买了一根天线。
指昆虫或甲壳动物头部的一对触角。
The antenna of a butterfly helps it find flowers.
蝴蝶的触角帮助它找到花朵。
这是比喻用法，表示对某事物的敏锐感知力或直觉。
She has an antenna for knowing what customers want.
她有一种能知道顾客需求的直觉。
Not this
The car has a antenna on its roof.
Use this
The car has an antenna on its roof.
antenna 以元音音素 /æ/ 开头，所以它前面的不定冠词要用 an，而不是 a。选择 a 还是 an 看的是发音，不是拼写。
Not this
There are several antenna on the roof.
Use this
There are several antennas on the roof.
antenna 是可数名词，复数要加 -s 变成 antennas。汉语名词没有复数变化，所以学习者容易漏掉词尾 -s；在 several、two 等复数概念后必须用复数形式。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
电视天线
We put up a TV antenna on the roof.
我们在屋顶上架起了电视天线。
定向天线
A directional antenna focuses the signal in one direction.
定向天线把信号集中到一个方向。
天线塔
The antenna tower can be seen from miles away.
从几英里外就能看到那座天线塔。
昆虫触角
The insect antenna is covered with tiny sensory hairs.
昆虫触角上布满了微小的感觉毛。
对……有敏锐的感知力
She has an antenna for style.
她对时尚有敏锐的感知力。
对……有敏锐的直觉/洞察力
She has an antenna for what the audience wants.
她能敏锐地感知观众想要什么。
保持警觉，随时留意
Experienced journalists keep their antenna up for subtle changes in a story.
有经验的记者会留意报道中细微的变化。
Use antenna naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：昆虫头上两根‘天线’般的触角，也是电视机接收信号的‘天线’；记住 antenna 两个意思共用一根‘接收棒’。
语域：neutral 常见场景：broadcasting、telecommunications、automotive 表示『天线』（用于接收或发送无线电/电视信号的设备）时，antenna 属中性语体，日常口语、技术说明和新闻报道中都比较常见；正式与非正式场合均可使用。上下文多涉及广播、通信或车载设备等。
antennas
Dictionary facts from ECDICT, WIKTIONARY.