Frost are ice crystals on a frozen surface.

霜就是冻结在地面上的冰晶。

You're used to seeing a mushroom above ground.

你已经习惯看到地面上的蘑菇了。

This can be done manually by workers on the ground.

这可以由地面上的工人手动完成。

These networks are based from the ground though.

但是这些网络是放置于地面上的。

Fog is like a cloud close to the ground.

雾气就像笼罩在地面上的云。

Don't worry. Look at the stones on the ground.

“别担心，看看地面上的石头。

A person on the ground controls the drone.

地面上的一个人负责控制无人机。

The pilot and 4 people on the ground were killed.

飞行员和地面上的4人遇难。

The fulcrum is your foot or knee in a ground.

支点是你在地面上的脚或膝盖。

Now, the brazil nut tree needs the agouti, way down there, to disperse the seeds.

西胡桃树需要地面上的刺鼠散播种子。

Temperatures here are much cooler than down on the desert floor.

这里的气温比沙漠地面上的低得多。

Some facilities on the ground do not.

一些设备是地面上的医院所不具备的。

They lived in tree houses to escape from the fierce creatures who lived below.

他们住在树屋里躲避地面上的凶猛怪兽。

The birds seem to be having fun just like their audience on the ground.

鸟儿们似乎和地面上的观众一样玩得很开心。

But scratching a living on the forest floor is hardly any easier.

可单单靠地面上的猎物谋生也不会容易到哪去。

Passengers aboard the plane and people on the ground heard a loud boom.

飞机上的乘客和地面上的人们听到一声巨响。

Indeed a fog is simply a cloud resting on the ground.

实际上, 雾气就是落在地面上的云朵。

Then they will wander into traps placed on the ground.

然后，它们会进入放置在地面上的陷阱中。

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

这使得地面上的植被成为了潜在的火灾传播源。

People on the ground saw large pieces of the aircraft fall.

地面上的人们看到飞机上很大的碎片落下来。