back chipping
英 [bæk ˈtʃɪpɪŋ]
美 [bæk ˈtʃɪpɪŋ]
网络 清根
双语例句
- Percussion methods of fire-lighting date back to Paleolithic times, when some Stone Age tool-makers discovered that chipping flints produced sparks.
打击生火方法的日期要返回到旧石器时代，当一些石器时代工具生产者发现打火石碎片产生火花。