1 (as expected) [+arrive, land] como estaba previsto he duly arrived at three llegó a las tres, como estaba previsto; I was duly grateful for his assistance como cabe esperar, le agradecí su asistencia
everybody was duly shocked
the visitors were duly impressed los visitantes quedaron muy impresionados, como era de esperar
2 (properly) [+elect, sign] debidamente the point was duly noted in the minutes se tomó debida nota de ese punto