回答和翻译如下：
Dark-haired and thin, in his early twenties, the young man was a stranger here. A suggestion of stylishness-in his general demeanor, in his jaunty green-and-blue-striped tie—was repudiated by the comfortable bagginess of his suit.
黑发和瘦，在他二十几岁的时候，这个年轻人在这里很陌生。他的时尚，在他的活泼的绿色和蓝色条纹领带的否定他西服的舒适的膨胀状。
这个年轻人二十岁出头，黑发、很瘦，面孔陌生。他颈间的鲜亮蓝绿色条纹领带使得他的整体风度显得非常时髦，但是宽大的西装却又颠覆了这一印象。
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