In a neat, clean, smart-looking way. It is the adverb from 'spruce', and it almost always describes how someone is dressed or how they look: 'sprucely dressed', 'sprucely turned out'. The picture is a person whose clothes are clean, pressed, and put together with care — not expensive, not fashionable, just tidy and correct. It carries a small warm feeling of approval, and often a slight old-fashioned flavour; it is the kind of word you meet in novels or in a newspaper describing an older gentleman at a wedding, more than in daily speech. Younger speakers today would more likely say 'smartly dressed' or just 'he looked really neat'. Note that it is nearly frozen to appearance — you would not say a room was 'sprucely arranged', even though you can 'spruce up' a room.

整潔體面地、衣著整齊地（多形容穿著）