person in the know

基本解释

You really need to have more consideration for others. You aren’t the only person in the world you know!
你真該多爲別人著想，要知道你竝不是這世上唯一的一個人。
In an effort to dramatically increase access to HIV treatment and prevention, Lesotho will launch the world's first plan to have every person in the country know their HIV status.
爲努力顯著增加獲得艾滋病毒治療和預防，萊索托將啓動全世界首項計劃，使該國每一個人都了解自己的艾滋病毒狀況。
The agreement principle from the person in the know has already not been suitable in modern medical research, and should be replaced by the contract principle from the person in the know.
知情同意原則已經不適應現代毉學研究，而應爲知情契約原則所代替。

The interviewer wants to know if the person understands the demands of life as a medical student and doctor in training.
Okay. I know one person in the department who is one of the most connected people I know on earth.
好的，我認識系裡的一個人,他是我認識的人中連接性最強的人。
耶魯公開課 - 心理學導論課程節選
Then I know someone else in the department and, as best I know, I'm the only person she knows.
我也認識系裡另一個人，據我所知，我是她唯一認識的人。
耶魯公開課 - 心理學導論課程節選

Beyond fear and treating the event as a competition, networking nights often leave those attending in the same comfort zone they arrived in: see a person you know, spend the majority of the night by their side, and meet a few new people but not nearly as many as you hoped had you decided to branch off early and look solo.
FORBES: 7 Everyday Places To Start Networking Face-To-Face At