As the last Ice Age came to an end, somebody picked a pebble out of a small river not far from Bethlehem.
随着最后一个冰河时代宣告结束，有人从伯利恒附近流水淙淙的小溪边，捡起了一枚鹅卵石。
And what I do is, I select a hard stone hammer, in this case a quartzite pebble about the size of a cricket ball, and I elect to hit it in one place - and this is where I start to knap.
