Sentence:  Peering down from the cockpit at grazing elephant, you have the feeling that what you are beholding is wonderful, but not authentic. It is not only incongruous in the sense that animals simply are not as big as trees, but also in the sense that the twentieth century, tidy and <WSD>svelte</WSD> with stainless steel as it is, would not possibly permit such prehistoric monsters to wander in its garden. 
Meaning of the word marked with <WSD> tags:  Refined, delicate.