1
use sth as coolant
coolant 在此为不可数名词，不加冠词。
You can use this mixture as coolant.
你可以把这种混合物用作冷却剂。
冷却剂；冷却液
先理解核心含义，再看它在真实句子里的用法。
冷却剂；冷却液
a liquid or gas used to cool a system or object by carrying heat away from it
You can use this mixture as coolant.
你可以把这种混合物用作冷却剂。
用于从物体带走热量的介质,通常为流体。
A medium, usually fluid, used to draw heat from an object.
冷却介质(气体或液体),尤指通过将热量从一处移至另一处来冷却系统的流体。
a fluid agent (gas or liquid) that produces cooling; especially one used to cool a system by transferring heat away from one part to another
The mechanic checked the coolant level in the radiator before the road trip.
在公路旅行前，机械师检查了散热器中的冷却液液位。
AI contextual example
Without enough coolant, the engine can overheat and cause serious damage.
没有足够的冷却液，发动机可能会过热并造成严重损坏。
AI contextual example
This type of coolant is specially formulated to work in extreme temperatures.
这种冷却液是专门配制用于在极端温度下工作的。
AI contextual example
he added more coolant to the car's radiator
他给汽车的散热器加了更多的冷却液
WordNet
coolant 在此为不可数名词，不加冠词。
You can use this mixture as coolant.
你可以把这种混合物用作冷却剂。
用于说明某种物质所起的冷却功能。
Helium acts as a coolant for the nuclear reactor.
氦气充当核反应堆的冷却剂。
表示冷却液在系统中的循环时，常带有定冠词或限定词。
The coolant flows through the engine block.
冷却剂流过发动机机体。
Not this
The radiator is low on cooling.
Use this
The radiator is low on coolant.
cooling 作名词时指“冷却的过程”，不是冷却液体本身；要表示“冷却液”这种物质，应用名词 coolant。low on 后面需要接具体物质.
Not this
I need to buy a coolant for my car.
Use this
I need to buy some coolant for my car.
coolant 在泛指冷却液这类物质时是不可数名词，不能用不定冠词 a；表示“一些”时用 some。只有特指“一种冷却剂”时才可说 a coolant，但这句话显然不是指类型。
Not this
The car's cooler is leaking.
Use this
The car's coolant is leaking.
cooler 指“冷却器或冷却装置”，不是液体；coolant 才指“冷却液”。表示“冷却液泄漏”时应用 coolant，注意区分机器与其中的介质。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
发动机冷却液
Always use the recommended engine coolant for your car.
始终为你的汽车使用推荐的发动机冷却液。
冷却液液位
The dashboard warning light indicated a low coolant level.
仪表盘警告灯提示冷却液液位过低。
冷却液泄漏
A small coolant leak can leave a puddle under the car.
轻微的冷却液泄漏会在车下留下一滩液体。
冷却液温度
The coolant temperature stayed normal during the climb.
爬坡过程中冷却液温度保持正常。
冷却液储液罐
Check the coolant reservoir when the engine is cold.
发动机冷却时检查冷却液储液罐。
冷却液混合液
A 50/50 coolant mixture protects against freezing and boiling.
50比50的冷却液混合液可防冻防沸。
发长 /uː/ 音 (如 food, boot)
Use coolant naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想 cool（凉）+ ant（剂），“凉的剂”就是带走热量的冷却剂。
语域：mixed 常见场景：汽车维修与保养、工程与工业技术手册、实验室设备说明 coolant 是一个技术性较强的常用词，通常出现在工程手册、设备说明书或汽车保养等场景，也用于日常口语；正式程度随语境变化，多用于中性或正式表达。
All six words end in the unstressed suffix /-ənt/ (spelled -ant), but none rhymes with coolant, whose stressed vowel is the same as in 'cool' /kuːl/. 'important' and 'accountant' stress the second syllable; 'pleasant', 'constant', 'tenant', and 'elephant' have different stressed vowels. Do not pronounce -ant as /-ænt/; it is /-ənt/.
Dictionary facts from ECDICT, WIKTIONARY.
Watch the sound change