you can increase or decrease the amount of oxygen one is breathing in," says executive manager of csir future production: manufacturing martin sanne.

o ka kgona go oketsa kgotsa go fokotsa oksijene e motho a e hemang," ga rialo molaodikhuduthamaga wa csir mo ditlhagisweng tsa mo isagong: tlhagisodikuno e bong martin sanne.
