1. At an unspecified time in the past, present, or future; at some point during a period of time
At some point, we will need to discuss this matter.
Em algum momento, precisaremos discutir este assunto.
2. During an indefinite occasion or instance
I'm sure we've met at some point in our lives.
Tenho certeza de que nos encontramos em algum momento de nossas vidas.