客气

例句：

1. 1. Please be polite when speaking to the manager.
   请在与经理交谈时保持礼貌。
2. 2. She always acts politely towards her colleagues.
   她总是对她的同事表现出礼貌。
3. 3.He was very polite and courteous to everyone.
   他对每个人都非常礼貌和有礼。