get off a bicycle
The Spanish phrase 'bajar(se) de una bicicleta' translates to 'get off a bicycle' in English. This phrase is usually used in the context of physically dismounting from a bike, for example, after a ride. It is composed of the verb 'bajar' or 'bajarse' which means 'get off' or 'get down', and 'una bicicleta' which translates to 'a bicycle'. In general, this phrase is communicating the action of dismounting or descending from the bike.
It's dangerous to get off a moving bicycle.
This phrase uses 'bajar de una bicicleta' to warn about the dangers of a specific action. In this case, the action is getting off a moving bicycle.
After a long ride, I decided to get off my bike and rest.
In this example, 'bajar de mi bicicleta' is used to express the action of getting off the bike. 'Después de un largo paseo' sets the context of the action, which is after a long ride.
Alejandro has to get off the bike to cross the street.
This example demonstrates a situation where 'bajar de la bicicleta' is necessary for safety reasons. In this case, Alejandro has to get off the bike in order to cross the street safely.