Ταιριάζει το «είμαι σε επιφυλακή»; Για την ακρίβεια, το be on the lookout for, ιδίως με τη δεύτερη σημασία παρακάτω;
be on the lookout (or keep a lookout) for
1 be alert to (danger or trouble): he told them to be on the lookout for dangerous gas
2 keep searching for (something that is wanted): we kept a sharp lookout for animals and saw several waterbuck