hydrogen
/ˈhaɪdɹəd͡ʒ(ə)n/
A colorless gas that is the simplest element.
“Hydrogen balloons floated into the clear blue sky.”
新增到 My Deck
/ˈhaɪdɹəd͡ʒ(ə)n/
A colorless gas that is the simplest element.
“Hydrogen balloons floated into the clear blue sky.”
新增到 My Deck