It's rigid, it's all tight folds and sharp edges.

死板，紧密的折痕，锋利的边缘。

But sometimes nebulae do have sharp edges.

但有时星云确实有锋利的边缘。

Others had sharp edges for cutting meat.

其他工具则有锋利的边用来切肉。

Woodwinds have air blown against a reed or sharp edge.

木管乐器靠吹奏。

They have sharp edges that help us bite into food.

它们有锋利的边缘，可以帮助我们咬进食物。

All of these prints had worn-down toes, not sharp edges.

所有这些指纹都是磨损的脚趾，而不是锋利的边缘。

The fork has three prongs. The knife has a sharp edge.

叉子有三个叉尖.刀子有锋利的边缘.

Those types of stones can make a really, really sharp edge.

这些类型的石头可以形成非常非常锋利的边缘。

Very sharp edges to the blades, and that's what they go around on, etc.

冰刀的边缘非常锐利，而这正是他们来回转动等等所踩的东西。

The obsidian was used in a number of tools with sharp or pointy edges.

黑曜石被用于很多工具的锐利边缘或尖刃处。

In a lot of nebulae there's no sharp edge; they just kinda fade away.

在很多星云中并没有尖锐的边缘；它们只是会慢慢消失。

And also, the sheath came to a sharp edge down here, much like a knife.

同样护甲在这里也成了锋利的边缘，很像一把刀。

They also found tools made from obsidian, a volcanic rock that can have an extremely sharp edge.

科学家还发现了用黑曜石制成的工具，黑曜石是一种火山岩，其边缘锋利。

So it's just near the sharp edge of the top teeth, kind of floating in the mouth.

舌头就在上面牙齿的锋利边缘附近，有点漂浮在嘴里。

It should be just below the top teeth or just behind the sharp edge of the top teeth.

舌头刚好在上牙的下面，或者刚好在上牙锋利的边缘后面。

If you like colas for their sharp, peppery edge, you're not going to want to time-travel to Y3000.

如果你喜欢可乐尖锐的辣味，你就不会想穿越到 Y3000。

Winding passageways are narrow and dark. And the walls are made of unforgiving limestone, porous and with sharp edges.

蜿蜒曲折的通道狭窄又黑暗。石灰岩筑成的墙壁很难对付，气孔众多，而且边缘锋利。

Now here, what they've done is they've taken that sharp edge outta the screen and made it smooth.

现在，他们所做的是把屏幕上尖锐的边缘去掉，使其光滑。

That's why it doesn't happen often to people who break easily or have sharp edges or have to be carefully kept.

这就是为什么它不常发生在那些容易折断、边缘锋利或必须小心保存的人身上。

You should ensure your cot has only rounded or smooth edging without any sharp edges, this is especially important for wooden cots.

你还要确定小床的边缘是圆的或平滑的，没有任何锋利的边缘，这对于木床来说尤为重要。