known about

• v. 知道关于 ... 的情况

known about的用法和样例：

例句

1. He had known about the scheme for some time, but only opted in at the last minute.
   这项计划他已经知道了一些时候，但直到最后一分钟才决定参加进去。
2. Besides, my father was a sailor, and I want to know about the places he used to go to.
   此外，我父亲过去是个水手，我想了解他过去常去的那些地方的情况。
3. She had known about the scheme for some time, but only opted in at the last minute.
   她知道这个计划已有一些时候，但直到最后一分钟才决定参加进去。
4. Henry thinks nothing is known about him, but I am told that the authorities have him taped.
   亨利以为谁也不知道他的情况，但我听说当局已摸清了他的底细了。