Methane and ethane are the main components of natural gas; they are normally stored as gases under pressure.
mˈɛθeɪn ænd ˈɛθeɪn ɑːɹ ðə mˈeɪn kəmpˈoʊnənts ʌv nˈætʃɚɹəl ɡˈæs; ðeɪ ɑːɹ nˈoːɹməli stˈoːɹd æz ɡˈæsᵻz ˌʌndɚ pɹˈɛʃɚ.