In official announcements I often hear the phrase "at all times" like in:
- Please, keep your seat belts fastened at all times during the flight.
I was looking at ways I can use it and dictionaries say that it means "always" or "continuously", I was looking at examples Longman gave and couldn't understand how "at all times" could mean either of those in these sentences:
- He measured CO2 at all times of the day and night. (Here it should mean within)
- Neighbours say the animals bark incessantly at all times of the day and night. (Here it should mean throughout)
- To help other people at all times. (Here it should mean constantly)
- Now she had to consider another person's wishes at all times. (Here it should be everytime)