As you can see, ladies and gentlemen, the guests were seated very informally around this oval table, which would add to the relaxed atmosphere.
出自-2013年12月聽力原文
since he began to informally announce the network at farming conferences and on social media, he's received a steady stream of inquiries from interested farmers.
2019年12月六級真題（第三套）閱讀 Section B
柯林斯高階英漢雙解學(xué)習(xí)詞典釋義
ADJ-GRADED
(言辭或行為)非正式的，親切隨便的
Informal speech or behaviour is relaxed and friendly rather than serious, very correct, or official.