1
press/step on/hit the accelerator
常用动词包括 press, step on, hit 等。
He pressed the accelerator to overtake the truck.
他踩下油门以超越卡车。
油门踏板
先理解核心含义，再看它在真实句子里的用法。
油门踏板
a pedal that controls the throttle valve
He pressed the accelerator to overtake the truck.
他踩下油门以超越卡车。
汽车中控制速度的踏板
加速的人或物。
One who, or that which, accelerates.
控制节气门的踏板
a pedal that controls the throttle valve
引起加速的装置。
A device for causing acceleration.
调节发动机燃油供给的阀门
a valve that regulates the supply of fuel to the engine
She pressed the accelerator and the car surged forward.
她踩下油门，汽车猛地向前冲去。
To maintain speed on the highway, keep your foot steady on the accelerator.
在高速公路上保持速度，脚要稳踩油门。
The driver gently eased off the accelerator as the traffic light turned yellow.
看到黄灯，司机轻轻松开油门。
常用动词包括 press, step on, hit 等。
He pressed the accelerator to overtake the truck.
他踩下油门以超越卡车。
多用于化学或工业领域。
They used the chemical as an accelerator in the reaction.
他们在反应中使用该化学物质作为加速剂。
Not this
I need to accelerator the car.
Use this
I need to accelerate the car.
accelerator 是名词，不能用作动词；应使用动词 accelerate 表示加速。
Not this
He stepped the accelerator.
Use this
He stepped on the accelerator.
表达“踩油门”时，step 后需要介词 on，不可直接接宾语。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
踩油门
He stepped on the accelerator to pass the truck.
他踩下油门，超过了那辆卡车。
把油门踩到底
She floored the accelerator as she merged onto the highway.
她并入高速公路时，把油门踩到了底。
松开油门
He released the accelerator and let the car slow down.
他松开油门，让车慢了下来。
粒子加速器
The Large Hadron Collider is the world's most powerful particle accelerator.
大型强子对撞机是世界上最强大的粒子加速器。
直线加速器
The hospital uses a linear accelerator for cancer treatment.
这家医院使用直线加速器治疗癌症。
化学促进剂
The lab uses a chemical accelerator to speed up the reaction.
实验室使用一种化学促进剂来加速反应。
踩下油门；加快速度
We need to step on the accelerator if we want to finish the project on time.
我们得加快速度，才能按时完成这个项目。
松开油门；放慢速度
After years of rapid growth, the company took its foot off the accelerator and lost market share.
经过多年的快速增长后，这家公司放慢了脚步，结果失去了市场份额。
踩下油门；加速前进
If we put our foot on the accelerator now, we can still catch up with the leaders.
如果我们现在踩下油门加快速度，我们还能赶上领先者。
Use accelerator naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
踩下油门，车就 accelerate（加速）；后缀 -or 表示“者/物”，所以 accelerator 就是让你加速的踏板。
语域：neutral 常见场景：driving a car、vehicle operation、car owner's manual 通常用于驾驶和车辆操作的场景，比较常见于汽车说明书和日常交流中。
generator、elevator、operator、refrigerator、translator 的词尾 -ator 都读 /eɪtɚ/，与 accelerator 的末尾 /eɪtɚ/ 押韵。注意形近词 accelerate 读作 /ækˈsɛləˌreɪt/，末尾没有 /ɚ/，不押韵；accelerometer /əkˌsɛləˈrɑːmɪtɚ/ 也是形近词，但读音差异更大，勿混淆。
Dictionary facts from ECDICT, WIKTIONARY.