someone employed to test the service in shops and businesses by pretending to be a normal customer神秘顾客(指受雇装扮成普通顾客来检查商店及企业服务质量的人)
👨🏻🏫 Mr. Ng 劍橋詞典 📚 – cambridge.mister5️⃣.net切換為繁體中文