[经] working capital provided by operation
yíng yè de lái de yùn yòng zī běn ㄧㄥˊ ㄧㄝˋ ㄉㄜ˙ ㄌㄞˊ ㄉㄜ˙ ㄩㄣˋ ㄩㄥˋ ㄗ ㄅㄣˇ