they're made of copper
they make of copper
pro:sub part prep n
they're made of copper.
ð eɪ ə ɹ WORD_BOUNDARY m eɪ d WORD_BOUNDARY ʌ v WORD_BOUNDARY k ɑ p ə ɹ 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