a public speaker, especially one who is eloquent or skilled (尤指雄辩的、有口才的)演说者;演说家 ■(亦作 public orator)an official speaking for a university on ceremonial occasions (在礼仪场合代表大学官方的)发言人
派生 oratorial adjective 语源
late Middle English: from Anglo-Norman French oratour, from Latin orator 'speaker, pleader'