they're made of copper
they make of copper
pro:sub part prep n
they're made of copper .
ð eɪ ɚ WORD_BOUNDARY m eɪ d WORD_BOUNDARY ʌ v WORD_BOUNDARY k ɑː p ɚ WORD_BOUNDARY
t h e y ' r e WORD_BOUNDARY m a d e WORD_BOUNDARY o f WORD_BOUNDARY c o p p e r WORD_BOUNDARY