(noun) An empty space;
gap. (NOTE: plural form is usually "lacunae" although "lacunas" is also acceptable)；
a blank gap or missing part；
an ornamental sunken panel in a ceiling or dome；
If you say that there is a lacuna in something such as a document or a person's argument, you mean that it does not deal with an important issue and is therefore not effective or convincing. (文件、论点等中对重要问题的)缺漏
例句 EXAMPLE: The story of my grandfather's adventuresome life had a curious lacuna between his graduation from college and the establishment of his first successful business.
短语 "Let's do lunch!"
英文释义 To meet someone at lunch, usually for an important discussion.
例句 EXAMPLE: When I mentioned my interest in starting a new business to my friend, he said, "Let's do lunch!", because he's always interested in new opportunities.