是 从 树 砍砍
shi4 cong2 shu4 kan3
v:cop prep n v
是 从 树 砍砍 .
ʂ ɻ̩˥˩ WORD_BOUNDARY tsʰ ʊ˧˥ ŋ WORD_BOUNDARY ʂ u˥˩ WORD_BOUNDARY kʰ a˧˩˧ n WORD_BOUNDARY 
是 WORD_BOUNDARY 从 WORD_BOUNDARY 树 WORD_BOUNDARY 砍 砍 WORD_BOUNDARY