top dog

noun
🔊/ˌtɒp ˈdɒɡ/
🔊/ˌtɑːp ˈdɔːɡ/
[usually singular] (informal)
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  1. a person, group or country that is better than all the others, especially in a situation that involves competition(尤指竞争中的)夺魁者,优胜者
    • The team wanted to prove that they were top dogs in the region.该队想证明他们是区内最好的。