咕 咕 是 什么
gu1 gu1 shi4 shen2me
on on v:cop pro:wh
咕 咕 是 什么 ?
k u˥ WORD_BOUNDARY k u˥ WORD_BOUNDARY ʂ ɻ̩˥˩ WORD_BOUNDARY ʂ ə˧˥ n m ɤ WORD_BOUNDARY 
咕 WORD_BOUNDARY 咕 WORD_BOUNDARY 是 WORD_BOUNDARY 什 么 WORD_BOUNDARY