cargar en el tren  (algo) - to carry, to load, to load, to fill, to rest (in architecture), to charge 

subir al tren  (a alguien) - to bring up, to take up, to go up, to come up, to climb, to go up, to rise, to increase, to raise, to be promoted 

arrastrar  (líquido)

sincronizar  (medicina)