He was discoursing to us on Keats.

They were discoursing over the latest gossip.

他们在谈论最近的蜚短流长.

They have been discoursing learnedly on this problem.

他一直在深入研究这个问题.

It would be discourteous to ignore his request.

忽略他的要求很不礼貌.

It was discourteous of you to arrive late.

你迟到了,真没礼貌.

His behaviour was wanting in courtesy , ie discourteous, rude.

他举止没有礼貌.

I was offended by his discourteous reply.

他无礼的回答使我很生气.

Lateness is discourteous to your classmates and to your professor.

迟到是对你同学和教授的不尊敬.

The above telephone conversation is not only discourteous, but also hurts business prospects.

以上的电话交谈非但粗鲁，亦损及商机。

Do not arrive tardy, can let superior had waited again long and discourteous.

迟迟不到, 则又会让上级等候过久而失礼.

To cast me off discourteously.

将我无情地抛去.

I must apologize for my discourtesy in arriving late.

我要为迟到失礼而道歉.

She felt she had committed a discourtesy.

她觉得自己做了一件不礼貌的事.

It is the first time for me to see this kind of discourtesy.

此等的不礼貌,我还是第一次见.

He was insensitive to all kinds of discourtesy.

他脸皮很厚,对随便什么侮辱都不在乎.

The customer complained to the manager of the discourtesy of an assistant.

顾客向经理控告一个营业员的失礼.

During the National Civic Virtues Month, all the cities should and banish disarray and discourtesy.

在全国文明礼貌月中, 所有城市必须搞好卫生,清除混乱和不礼貌现象.

The police are trying to discover the identity of the killer.

警方正努力调查杀人凶手的身份。

We all look forward to the day when the scientists can discover more secrets of the universe.

我们都向往那一天：科学工作者能发现更多的宇宙秘密。

The rumor is false, so far as I can discover.

就我所看到的实情来说,那谣言是不真实的.

They discover that the new teacher is a martinet.

他们发现新来的老师非常严格.