When he was at a safe distance the boy extricated himself from the thorn tree; but not without inflicting new wounds upon his already tortured flesh.

当他离开安全距离时，男孩从荆棘树上逃了出来。但并非没有在他已经饱受折磨的肉体上造成新的伤口。

One reason for the permanence of the blaze was now manifest: the fuel consisted of hard pieces of wood, cleft and sawn—the knotty boles of old thorn trees which grew in twos and threes about the hillsides.

那火长燃不熄的原因，现在清楚了：燃料都是劈开了锯成一块块的老荆棘树干。这些树三三两两长在山脚边。