It lasts, however, only a few seconds, vanishing with magical rapidity, to be succeeded by others along the fire-line at irregular intervals, tree after tree, upflashing and darting, leaving the trunks and branches scarcely scarred.

然而，它只持续了几秒钟，以神奇的速度消失了，火线上的其他人以不规则的间隔接踵而至，一棵又一棵树，一闪一闪地飞来飞去，几乎没有留下树干和树枝的伤痕。