马上(shàng )便合力转动巨弩上(shàng )的绞盘(pán ),将弩(nǔ )的弦(xián )给(gěi )拉到挂钩(gōu )上挂好。然后,他们将那些(xiē )带有倒钩和(hé )绳索的所谓鱼叉放(fàng )在了(le )弩机上(shàng )。接着,随着石(shí )立生发生喊(hǎn ),他们以重(chóng )锤(chuí )敲击了一下巨弩的扳(bān )机(jī ),便(biàn )将(jiāng )鱼叉弹射了出去。巨大的(de )鱼叉(chā )“呼”的一声飞出,一(yī )下便射在(zài )龟背兽(shòu )的脖颈和脸(liǎn )部。这些部位虽然有鳞片保护,而且龟背兽的(de )皮(pí )也挺厚(hòu )挺坚韧的,