Translation of "Presence" in Chinese

The red flag indicated the presence of danger.

红旗代表存在危险。

Don't talk about it in my mother's presence.

我妈在的时候别讨论这件事。

John felt the presence of a ghost in the dark room.

約翰感覺到那黑漆漆的房間裏有鬼。

I told you not to talk about the matter in her presence.

我跟你说过她在的时候不要说这件事。

- You shouldn't say such a thing in the presence of children.
- You shouldn't say that kind of thing when children are around.

孩子们在旁边的时候，你不应该说那种事。

- He was aware of my presence but he did not greet me.
- He was aware that I was around, but didn't come to greet me.

他注意到我在場，但是沒向我打招呼。