This is the 14389th most frequent Russian word.
отправляется
"Отправляется" means "is departing" or "is being sent."
In this sentence, "отправляется" refers to the scheduled departure of the train.
Поезд отправляется в пять часов вечера.
The train departs at 5 PM.
Here, "отправляется" indicates that she is beginning her travel.
Она отправляется в путешествие по Европе.
She is embarking on a journey across Europe.
In this example, "отправляется" means that the ship is starting its expedition.