We would not detect its presence for another two weeks.
It would be impossible for anyone to detect the presence of the car from above.
He could read movement and detect presence from the elements.
We are no longer able to detect the planet's presence.
Yet any one looking upward from the street below would never have detected its presence.
She must have detected Brand's presence and be leading the others to him.
Even though nothing in this primitive age should have been able to detect his presence.
They will never detect the presence of a Human among the wreckage.
And Roland must no longer have detected her presence, because he went on.
The enemy, however, detected her presence before she could close the target.
