1·I was amazed by their discourtesy and lack of professionalism.
我为他们的无礼和职业精神的缺乏所震惊。
—— 《柯林斯英汉双解大词典》
2·But at the time he was merely offended at a discourtesy, and compared it with similar lapses in the past.
但在那时他只是感觉被无礼的举动冒犯到，与以前发生类似的事做了下比较。
3·Private emotion diary, only for memory, welcome all friends reading, but refuse discourtesy.
私人情感日记，回忆片段，欢迎所有朋友阅读和留言，但请勿无礼评论。