[经] cost of exploration and appraisal of the field

yóu tián kān tàn yǔ píng gū de fèi yòng ㄧㄡˊ ㄊㄧㄢˊ ㄎㄢ ㄊㄢˋ ㄩˇ ㄆㄧㄥˊ ㄍㄨ ㄉㄜ˙ ㄈㄟˋ ㄩㄥˋ