"The doctors do not know what to do for the child."
Translation:La kuracistoj ne scias kion fari por la infano.
A doktoro is one who has a doctor degree in something, could be anything from geology to rocket science. A kuracisto is the type of doctor that heals people.
In official medecin, all doctors (kuracistoj) has a doctor title (doktoro). For many people, all doctors they know are healing doctors.
KONI = Havi ideon pri iu aŭ io = to have a general idia about somebody or something
SCII = Koni certe kaj precize = to know certainly and precisely
If you dont know and feel the the difference, use either of them