primus

例句：

1. 1. The primus of the teamis our captain.
   团队的第一人是我们的队长。
2. 2.Primus was the first to arrive atthe meeting.
   普里穆斯是第一个到达会议的人。
3. 3. He is the primus in his field, a true expert.
   他是他领域的首席专家，真正的专家。