这 是 楼梯 呀
zhe4 shi4 lou2ti1 ya
pro:dem v:cop n sfp
这 是 楼梯 呀 .
ʈʂ ɤ ˥˩ WORD_BOUNDARY ʂ ɻ̩ ˥˩ WORD_BOUNDARY l ou̯ ˧˥ tʰ i ˥ WORD_BOUNDARY j a WORD_BOUNDARY 
这 WORD_BOUNDARY 是 WORD_BOUNDARY 楼 梯 WORD_BOUNDARY 呀 WORD_BOUNDARY