a ray of hope
idiom一线希望
The news gave us a ray of hope.
这个消息给了我们一线希望。
放射；发出射线
先理解核心含义，再看它在真实句子里的用法。
放射；发出射线
to emit or radiate as if in rays
The sun rays through the clouds every morning.
每天早晨阳光透过云层射出来。
像光线一样发出某物
To emit something as if in rays.
像光线一样辐射
To radiate as if in rays.
暴露于辐射中
To expose to radiation.
ray
Base
原形
rays
3rd person
第三人称单数
raying
-ing
现在分词
rayed
Past
过去式
rayed
Past participle
过去分词
The sun rays through the clouds.
太阳透过云层射出光线。
The sun rayed through the clouds yesterday.
昨天太阳透过云层射出光线。
The sun is raying through the clouds now.
现在太阳正透过云层射出光线。
A smile rayed across her face when she heard the news.
听到这个消息时，她的脸上浮现出微笑。
The lighthouse rays a powerful beam of light into the darkness.
灯塔向黑暗中放射出强大的光束。
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Missing: Usage patterns
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一线希望
The news gave us a ray of hope.
这个消息给了我们一线希望。
给人带来快乐的人（常作反语）
Come on, be a ray of sunshine for once.
拜托，偶尔也开心一点。
晒晒太阳
I'm going to the beach to catch some rays.
我要去海滩晒晒太阳。
发长 /eɪ/ 音 (如 day, play)
Use ray naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
太阳发出的光线叫 ray，读 /reɪ/；动词也是这个 ray，想象光芒四射、向外辐射，拼写不变。
语域：mixed 常见场景：literary or poetic writing、scientific or medical writing 作动词时，“像光线般放射”多用于文学性描述或正式书面语；而“使受辐射”则常见于物理、医学等科技语境。日常口语中较少单独使用，更常用 radiate 或 expose to radiation 等表达。
可作为及物或不及物动词
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.