坐 火车 啦 啊
zuo4 huo3che1 la1 a1
v n sfp sfp
坐 火车 啦 啊 .
ts w o ˥˩ WORD_BOUNDARY x w o ˧˩˧ ʈʂʰ ɤ ˥ WORD_BOUNDARY l a ˥ WORD_BOUNDARY a ˥ WORD_BOUNDARY 
坐 WORD_BOUNDARY 火 车 WORD_BOUNDARY 啦 WORD_BOUNDARY 啊 WORD_BOUNDARY