top dog
成語所屬單字dog
top dog — 慣用語
1. the person who is the most important, powerful, or successful in a group.
1.慣用語
釋義
老大；龍頭；領頭羊
the person who is the most important, powerful, or successful in a group.
例句
After years of hard work, Sofia became the top dog in the company's marketing department.
In the world of smartphones, one brand has been the top dog for nearly a decade.