Usages of vigilar
Siempre queremos intercambiar ideas en clase, pero la maestra tiene que vigilar el tiempo.
We always want to exchange ideas in class, but the teacher has to watch the time.
Los estudiantes intercambian libros durante la clase, y el profesor los vigila para asegurar la disciplina.
The students exchange books during class, and the teacher watches them to ensure discipline.
El profesor vigila para asegurar la disciplina en clase.
The teacher watches to ensure discipline in class.
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