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Use "unenclosed" in a sentence
"Melk has six hundred mares, all running out in unenclosed fields."
"Further, if the motor is "unenclosed" (has ventilation slots) & is 10 years old, it is highly advisable NOT to connect a VFD to this motor unless it has been fully tested."
"Cape Town was condemned in a recent court judgment for building 50 unenclosed loos in the Makhaza section of Khayelitsha."