emit
英 [i'mɪt] 美 [i'mɪt]
vt.发出，发射；放射；吐露
◉Etymology
“Emit” 源于拉丁语 “emitere”，由 “e-”（意为“出、外”）和 “mittere”（意为“送、放”）组成。因此，“emit”的字面意思是“送出、释放”。这个词在英语中被引入用来描述释放气体、光或其他形式的物质的行为。
◉外刊例句
① 《科学美国人》 (Scientific American), 2023年4月10日
“The new study shows that the plant species emits a substance that can repel certain pests.”
“新研究表明，这种植物物种释放出一种可以驱赶特定害虫的物质。”
② 《国家地理》 (National Geographic), 2022年8月5日
“Cars emit harmful gases that contribute to air pollution and climate change.”
“汽车排放有害气体，导致空气污染和气候变化。”
◉经典名著
在玛丽·雪莱的小说《弗兰肯斯坦》（Frankenstein）中，“emit” 用于描述科学发现中的重要性和放射：
“The creature seemed to emit a glow of life, challenging the very laws of nature.”
“这个生物似乎散发出生命的光芒，挑战着自然的法则。”
◉Usage Examples
(1) The cheese was emitting a strong smell.
(2) A volcano emits smoke and ashes.
(3) He was so pale that he seemed to emit a pearly glow.
(4) Fireflies emit light but not heat.
(5) The radio stations emit energy into the air.
(6) A fixed star can emit light and heat by itself.
(7) He emits his opinion.
(1) 干酪散发出强烈的气味。
(2) 火山散发着烟和灰。
(3) 他白得似乎发出像一样珍珠的微光。
(4) 萤火虫发光但不放出热。
(5) 无线电站把能量发射到空气中。
(6) 恒星本身发光发热。
(7) 他表达了他的观点。
◉Usage Notes
To emit means to give off or let out, and it usually has a lot to do with gases, smells and noises. All of which could be potentially embarrassing, depending on where they're coming from.
Lots of things can be emitted: body heat from your hands, high pitched sound waves from a dog whistle, nasty odors from your mouth after a garlic-heavy lunch. Coming from the Latin emitter, it simply means to “send forth.” Since global warming is such a hot topic, you've probably heard people talking about how much CO2 cars emit or how many greenhouse gases factories emit into the air.
◉Colins
1. VERB 动词]发出，排放，散发（热、光、气或气味） If something emits heat, light, gas, or a smell, it produces it and sends it out by means of a physical or chemical process. [V n] [FORMAL 正式]
The new device emits a powerful circular column of light.
新设备发出明亮的圆形光柱。
...the amount of carbon dioxide emitted.
二氧化碳排放量
2. [VERB 动词]发出（声音或噪音） To emit a sound or noise means to produce it. [V n] [FORMAL 正式]
Polly blinked and emitted a long, low whistle.
波莉眨了眨眼，吹了一声低沉而悠长的口哨。
