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Your sentence
火车 快 到 了
Words in this sentence
火车
train
快
rapid; quick; speed; rate; soon; almost; to make haste; clever; sharp (of knives or wits); forthright; …
到
to reach; to arrive; to leave for; to go to; to (a place); until (a time); up to (a point); (verb complement indicating arriving at a place or reaching a point); considerate; thoughtful; thorough
了
(completed action marker); (modal particle indicating change of state, situation now); (modal particle intensifying preceding clause)
Particle