However, the villagers learn of his presence, and he must flee again.

A few months later, the authorities learned of their presence and ordered them to leave.

The guard learns of their presence and enters the room.

No one from his home base was to be allowed near him or to learn of his presence.

Timeras said: "How could they have learned of our presence so soon?"

There is no other explanation for the speed with which the neighbors learn of her presence.

There were certain persons, however, who could have learned of his presence last night.

Once we had learned of their base's presence, it was no longer useful to them.

You say you've only learned of his presence now?

Since we learned of their presence among these mountains, they have offered us no harm.