Usages of cambiar
Mi horario cambia cada semana, así que debo organizar mis clases con cuidado.
My schedule changes every week, so I must organize my classes carefully.
El clima cambia durante el verano.
The weather changes during the summer.
Se camina con cuidado por la acera, sobre todo cuando el semáforo cambia de color.
People walk carefully on the sidewalk, especially when the traffic light changes color.
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