courteous [ˈkɜ:tiəs]

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adj.彬彬有礼的，客气的

polite and respectful ; well-mannered

Although she often disagreed with me, she was always courteous. 尽管她常常和我意见不一，但她总是很谦恭有礼。
He was a kind and courteous man. 他为人友善，而且彬彬有礼。