Next, tank before a terrible carpet of metal spikes, nicknamed felons'lawn.

接下来是是前面呈地毯状的金属长钉, 它的绰号是重罪犯们的草坪。

He jumped on my foot with his boots and pushed the metal spikes right through. " Why didn't you say something" ? I asked.

他穿着靴子踩到我的脚上，金属钉子直穿了进去。" 你为什么不说呢？" 我问。

Yvon Chouinard changed his favourite sport, mountaineering, by introducing reusable pitons (the metal spikes you bang into the rock face and attach a rope to).

使用可循环利用的岩石钉（登山者把这种金属长钉敲进岩壁后在上面栓绳索）。