This cooling liquid formed a very hard rock known as granite.

这种冷却液体形成了一种非常坚硬的岩石，被称为花岗岩。

For one, they have a hard, mineralized layer on the outside.

首先，鳞片表面有非常坚硬的矿化层。

And they come in their own very hard shell.

它们都有非常坚硬的外壳。

Marble is a type of stone, it's a very strong type of stone.

石是一种石头，它是非常坚硬的一种石头。

This is like a really hard plaque that discolors your teeth, and at this point, only a dentist would be able to get rid of it.

这就像是一种非常坚硬的牙菌斑，会让你的牙齿变色，这时，只有牙医才能将其清除掉。

Cobalt is a hard, shiny metal that is often mixed with other metals. It is very rare but extremely important to the production of batteries.

钴是一种非常坚硬、亮的金属，经常与其他金属混合存在。这种金属非常罕见，但对电池的生产极为重要。

Well, the stone is a kind of very hard rock called granodiorite. It is dark grey and pink in color.

石碑由非常坚硬的花岗闪长岩制成。石碑的颜色为深灰色和粉色。

Have you ever seen a diamond? It is a very bright, hard kind of stone, and very dear.

小朋友，你见过钻石吗？钻石，也叫金刚石，是一种非常亮，非常坚硬的石头，价钱还特别贵。

This material forms very hard ceramics that also find use in everything from car brakes to bulletproof vests.

该材料可制造非常坚硬的陶瓷，而这种陶瓷适用于从汽车制动到防弹背心等很多领域。

It's not even wooden; that's rock-solid.

门甚至不是木头做的；是非常坚硬的实心材质。

So these things are really tough, and the buildings they're in are probably hardened both inside and out.

所以这些东西非常坚硬，它们所在的建筑内外可能都加固了。

The nails on our fingers and toes are only parts of the skin which have grown very hard.

我们的手指与脚趾上的指甲, 只是长得非常坚硬的一部分皮肤而已。

Now those letters are made of metal, so they're a very hard material.

现在这些字母是金属制成的，所以是一种非常坚硬的材料。

How do you break up a really solid soil?

如何分解非常坚硬的土壤？

You pay for a very stiff frame.

你为非常坚硬的框架付出了代价。

She thinks it is a very hard cupboard!

她认为这是一个非常坚硬的橱柜！

Something that is made very well is something made with " fine workmanship." These watches, according to the clerk, have " very hard crystals." In this case, the word " crystal" refers to the cover that protects the face of the watch.

做得很好的东西是“做工精细” 的东西。根据店员的说法， 这些手表有“非常坚硬的水晶” 。 在这种情况下，“水晶” 一词指的是保护手表表面的盖子.

Sea desert camel pants are made of pretty thin material, and dropping your chicken tenders down onto some very stiff dried up grass or prickly plant definitely made you wish you stayed standing and risked a bullet.

海沙漠骆驼裤是用非常薄的材料制成的，将你的鸡胸肉掉到一些非常坚硬的干草或多刺植物上肯定会让你希望你站着冒着子弹的风险。

So, it turns out that if you think of space itself, now this is going to blow your mind too, if you think of space as being like a material like this table, it's very stiff.

因此，事实证明，如果你把空间本身想象成一种物质，就像这张桌子一样的材料，那么空间是非常坚硬的。

As it cools up, it's going to turn into this really hard glass like material and now that my caramel is cooling, I'm going to go back and make the actual brownie batter.

当它冷却时， 它会变成这种非常坚硬的玻璃状材料， 现在我的焦糖正在冷却，我要回去制作真正的核仁巧克力饼面糊。