helium - hélium
BrE
/'hi:lɪəm/
AmE
/'hi:lɪəm/

noun - (the chemical element of atomic number 2) a very light gas










review
review - opakování (učiva)
BrE
/rɪ'vju:/
AmE
/rɪ'vju:/

noun, American English - the act of going through something you once learned in order to remember it better, e.g. before a test in school etc.