emission
emission — 名詞
1. the process by which a substance such as gas, heat, light, or radiation is sent
排放
氣體、光、熱等向外釋出的過程
the process by which a substance such as gas, heat, light, or radiation is sent out or released from a source
The emission of heat from the engine caused the metal parts to expand.
引擎排放的熱量導致金屬零件膨脹。
emission of [heat/gas/light] — uncountable, general process
Felipe's research focused on the emission of light from certain chemical reactions.
Felipe 的研究聚焦於某些化學反應所釋放的光。
The new filter system reduces the emission of harmful gases into the atmosphere.
新的過濾系統能減少有害氣體排放到大氣中。
The sensor detected an emission of methane gas just before midnight.
感測器在午夜前不久偵測到一次甲烷氣體的排放。
- absorption
the process of taking in rather than sending out
文法句型
emission of [gas/heat/light/radiation]
the emission of [substance]
用法筆記
When referring to the general process, this sense is usually uncountable (e.g., 'the emission of heat'). For a single specific instance, it can be countable (e.g., 'an emission of smoke').
常見錯誤
2. a specific amount of gas, especially carbon dioxide, that is produced and releas
排放量
測量出的氣體釋放數量，常用複數
a specific amount of gas, especially carbon dioxide, that is produced and released into the air, often measured for environmental or regulatory purposes
The government set strict limits on carbon emissions from cars.
政府對汽車的碳排放量訂下了嚴格的上限。
countable noun: carbon emissions / CO₂ emissions
Hyun checked the factory's CO₂ emissions on the monitor every morning.
Hyun 每天早上在監測器上檢查工廠的二氧化碳排放量。
Mei watched methane emissions rise on her tablet as the dairy cows entered the barn.
Mei 看著平板電腦上的甲烷排放量隨著乳牛進入牛舍而上升。
Wei watched the monitor as the hybrid bus's CO₂ emissions dropped below the target.
Wei 看著監測器上混合動力巴士的二氧化碳排放量降到目標值以下。
文法句型
[modifier] + emissions
reduce/cut/limit + emissions
用法筆記
Almost always used in the plural form (emissions) when referring to measurable quantities. The singular (an emission) is rare outside scientific contexts.
常見錯誤
3. harmful substances, especially gases or small particles, that are released into
有害排放物
車輛、工廠排出的有害氣體或微粒
harmful substances, especially gases or small particles, that are released into the air by vehicles, factories, or power stations and damage the environment or human health
The factory must clean its emissions before releasing them into the air.
工廠在排放之前必須先淨化其有害排放物。
countable plural: factory emissions
Diesel emissions contain tiny particles that are bad for human health.
柴油排放物含有對人體健康有害的微小顆粒。
Thick black emissions from the factory chimney drifted over the school playground.
工廠煙囪冒出的濃黑排放物飄過學校操場的上空。
Yael fitted a new filter to reduce her truck's harmful exhaust emissions.
Yael 加裝了一個新的過濾器來減少卡車的有害廢氣排放。
- pollutants
directly names the harmful quality; more specific
- exhaust fumes
informal; limited to vehicle emissions
文法句型
industrial/vehicle/factory + emissions
emissions + contain/produce/cause
用法筆記
Frequently appears in news and political discussions about climate change and air quality. Focuses on the harmfulness of the substances, unlike sense 4 which is broader in scope.
常見錯誤
4. any solid, liquid, or gaseous substance that is released into the air from a nat
釋出物質
自然或人為源頭排入空氣的物質
any solid, liquid, or gaseous substance that is released into the air from a natural or man-made source, not necessarily harmful
Volcanic emissions include ash, sulfur dioxide, and water vapor.
火山釋出物包括火山灰、二氧化硫和水蒸氣。
natural source: volcanic emissions
Dr. Nakamura sealed a sample of the chemical plant's airborne emissions in a glass jar.
中村博士將化學廠的空氣釋出物樣本密封在玻璃罐中。
The eucalyptus grove released a white haze of natural emissions into the warm morning air.
桉樹林在溫暖的早晨空氣中釋出一層白色的自然霧氣。
Nora collected samples of gaseous emissions from the volcano's crater.
Nora 從火山口收集了氣態釋出物的樣本。
文法句型
[source-type] + emissions
volcanic/natural/chemical + emissions
用法筆記
Broader than the environmental sense (sense 3). This sense includes natural emissions such as volcanic gases or plant vapours, which are not necessarily harmful. More common in scientific or technical writing.
5. a fluid or substance that an animal or human body releases, either as a normal p
排出物
生物體內排出的液體或物質
a fluid or substance that an animal or human body releases, either as a normal process or as a sign of illness
The patient's nasal emissions were tested for signs of infection.
患者的鼻腔分泌物接受了感染檢測。
medical register: nasal emissions
The doctor checked the bodily emissions for signs of a stomach problem.
醫生檢查了身體的排出物以確認是否有胃部問題。
Certain medications can reduce the emission of stomach acid at night.
某些藥物可以減少夜間胃酸的分泌。
When Keiko woke up, yellow emissions had crusted along her eyelashes.
Keiko 醒來時，黃色的分泌物已經在她的睫毛上結成硬塊。
文法句型
[body-part] + emissions
nasal/ocular/intestinal + emissions
用法筆記
Very formal or medical register. In everyday conversation, words like 'discharge' or 'waste' are far more common. Typically used by doctors in clinical reports.