Keep off! Wet paint.
油漆未干，請勿靠近！
Keep off the subject of politics
勿談政治。
I managed to stick to the diet and keep off sweet foods
我努力做到了只吃規定飲食，不沾甜食。
The local police had warned visitors to keep off the beach at night.
當地警方告誡游客不要在夜間去海灘。
The afflicted person should keep off solid foods and drink plenty of fluids.
病人不應吃固體食物而要多喝流質食物。