The thickness of the hardened structure depends on the time the wire is connected to the power source-usually up to 30 minutes.

这种硬结构的厚度取决于线连接到功率电源的时间，通常是30分钟。

The central part of the feather became a hardened structure called a rachis, with lots of little barbs and barbules, creating the vanes of the feather.

羽毛的中央部分变成了一种称为羽轴的硬化结构，上面有许多小倒钩和小枝，形成了羽毛的叶片。

The fireball releases a ring of thermal energy from its core that scorches all  living things and causes extreme damage to all but the most hardened structures.

火球从其核心释放出一圈热能，烧焦所有生物，并对除了最坚硬的结构之外的所有生物造成极大的损害。