Frost are ice crystals on a frozen surface.

霜就是冻结在地面的冰晶。

Now, smoke still rose up from the warm ground over the desolate hills.

而现在，发热的地面仍然升腾着烟雾，弥漫在荒凉的。

The leaf-strewn ground was now swarming with spiders.

铺满落叶的地面现在密密麻麻的都是蜘蛛。

Now, everybody at the time was interested in this incredible diversity aboveground.

在当时，每个人都对地面的这种令人惊诧的多样性而感兴趣。

These networks are based from the ground though.

但是这些网络是放置地面的。

Then autumn leaves turn brown, fall into piles upon the ground.

然后秋天的树叶变成了棕色，落在了地面的树桩。

Harry noticed that he seemed much less coordinated on the ground.

哈利注意到，他一旦落到地面，他的动作看去就不那么协调了。

You're used to seeing a mushroom above ground.

你已经习惯看到地面的蘑菇了。

You're used to seeing a mushroom above ground, mycelium is like the roots beneath it.

你可能看惯了地面的蘑菇，但菌丝体其实是它下面的根。

This can be done manually by workers on the ground.

这可以由地面的工人手动完成。

Here's Roger Penrose, now Sir Roger Penrose, standing on a field of Penrose tiles.

如图是罗杰·彭罗斯，现在该称他为罗杰·彭罗斯爵士，站在由彭罗斯瓷砖铺成的地面。

She sits on the bare ground and looks up at the towering vortex around her.

她坐在裸露的地面，向看着她高耸的旋涡围绕着她。

That makes the vegetation on the ground right for spreading potential fires.

这使得地面的植被成为了潜在的火灾传播源。

They didn't need any other landmarks on the ground.

他们不需要地面的任何其他地标。

But what about the conditions there? Even the dirt on the ground could kill us.

但那里的环境条件呢？甚至地面的尘土都可能杀死我们。

Suddenly, the dogs be-came silent and ran around with their noses to the ground.

突然，狗们静了下来，边跑边用鼻子在周围的地面嗅。

A person on the ground controls the drone.

地面的一个人负责控制无人机。

When we drive a car on dry ground, it can create a dust cloud.

当我们在干燥的地面驾驶汽车时，会产生尘埃云。

Back on Earth, Margaret Hamilton held her breath.

地面的玛格丽特·汉密尔顿摒住了呼吸。

Fog is like a cloud close to the ground.

雾气就像笼罩在地面的云。