Brindley worked, for example, to improve the grinding of flints, which were used in the rising pottery industry.
为了改进例如燧石的研磨过程，布林德雷努力工作着，燧石是新兴陶瓷工业的常用材料。
2
Cigarette lighters and other lighters, whether or not mechanical or electrical, and parts thereof other than flints and wicks.
香烟打火机和其他打火器(不论是机械的，还是电气的)及其零件，但打火石及打火机芯除外。
3
The warriors carry long, ash spears tipped with hand-shaped flints as sharp as shards of broken glass, and blunt-headed stone clubs hanging from loops on broad oxhide belts.