wˌaɪl wˈʌn kˈɑːɹbən daɪˈɑːksaɪd skɹˈʌbɚ fˈɪltɚz ðɪ ˈæstɹənˌɔːts ˈɛɹ, ðɪ ˈʌðɚɹ ɪz vˈɛntᵻd tə ðə mˈɑːɹz ˈætməsfˌɪɹ.
While one carbon dioxide scrubber filters the astronauts' air, the other is vented to the Mars atmosphere.