Change to
| Approach Control
| change to | |
| gen. | cambiar a |
| approach control | |
| commer. transp. avia. | control de aproximación |
| mun.plan. transp. | mando de aproximación |
| railw. sec.sys. | mando por aproximación |
| |||
| cambiar a | |||
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Change to : 70 phrases in 20 subjects |