21. It was last renovated in the 1980s preserving the essential characteristics of the original garden design. 22. Observable changes in features of an entity are not salient enough to alter its essential characteristics . 23. The essential characteristic of nerds is that they lack a normal understanding of style and social graces. 24. She will have animation of her face and the essential characteristics of her face will be there. 25. This is the essential characteristic of Bombay. 26. But we can recover the essential characteristics . 27. The world's second-largest auto maker cannot afford to deprive Volvo of an essential characteristic : its uniqueness. 28. And further states that . . . . " with this statutory reform not alter its essential characteristics . 29. It is a conceptual entity that describes the " central nucleus " or essential characteristics of a class. 30. In this way, Ishmael is a model of surrendering one's will to God, an essential characteristic in Islam.