engine
 
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SMART Vocabulary: related words and phrases

Railways: trains & parts of trains
aerial tram
aerial tramway
bogie
boiler
bullet train
carriage
coach
cowcatcher
diesel
emergency cord
guard's van
luggage van
puffer train
rolling stock
shunter
sleeper
sleeping car
smoker
super-express
third rail
locomotive
adjective
uk /ˌləʊ.kəˈməʊ.tɪv/ us /ˌloʊ.kəˈmoʊ.t̬ɪv/
relating to movement or the ability to move运动的;有运动力的

SMART Vocabulary: related words and phrases

Physics: particular theories & concepts
aphelion
azimuth
conservation
cryogenics
dark matter
emergence
emergent
kinetics
momentum
perigee
perihelion
Planck's constant
quantum
refraction
relativistic
relativity
speed of sound
spring constant
time dilation
wormhole

locomotive | American Dictionary

locomotive
noun[ C ]
us/ˌloʊ·kəˈmoʊ·t̬ɪv/
the engine of a train that pulls it along