啊 是 两 层
a1 shi4 liang3 ceng2
sfp v:cop num cl
啊 是 两 层 .
a˥ WORD_BOUNDARY ʂ ɻ̩˥˩ WORD_BOUNDARY l j a˧˩˧ ŋ WORD_BOUNDARY tsʰ ə˧˥ ŋ WORD_BOUNDARY 
啊 WORD_BOUNDARY 是 WORD_BOUNDARY 两 WORD_BOUNDARY 层 WORD_BOUNDARY