您要查找的是不是：
- 信件a letter (i.e. sent in the mail)
- 主旨lemma
- 他已经收到了一大批信件。He has received a swarm of letters.
- 我的信件恰巧受到严格控制。My correspondence happens to be rigidly controlled.
- 市长将在大会上作主旨发言。The mayor will keynote the convention.
- 那个邮差准时地投递信件。The mailman delivered the letters promptly.
- 他的演说主旨是世界和平。World peace was the keynote of his speech.
- 私人信件private letter
- 论点，主旨，主题标题当中显示出来的主题、论点或题材A theme, an argument, or a subject indicated in a title.
- 他的秘书将他的信件放到收文盘内。His secretary put his mail in his in tray.
- 我发现要了解他的演讲主旨是很困难的。I find it difficult to understand the purport of his speech.
- 他被人撞见在偷信件。He was overseen stealing the letters.
- 主旨主题或中心思想A dominant theme or central idea.
- 最近我收到了一大批信件。I have received a shower of letters recently.
- 主旨鲜明。The main purpose is fresh and bright.
- 投诉的信件潮涌般寄来。Letters of complaint flooded in.
- 文章的主旨the gist of the article
- 雪片般的信件a blizzard of letters
- 文件的主旨the purport of a document.
- 他每天有大量的信件要回复。He has a large amount of mail to answer every day.
