1.Frost are ice crystals on a frozen surface.

霜就是冻结在地面上冰晶。

2.You're used to seeing a mushroom above ground.

你已经习惯看到地面上蘑菇了。

3.This can be done manually by workers on the ground.

这可以由地面上工人手动完成。

4.These networks are based from the ground though.

但是这些网络是放置于地面上。

5.Fog is like a cloud close to the ground.

雾气就像笼罩在地面上云。

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

“别担心，看看地面上石头。

7.A person on the ground controls the drone.

地面上一个人负责控制无人机。

8.It's not like anything we experience here on the ground.

这和我们在地面上体验完全不同。

9.The pilot and 4 people on the ground were killed.

飞行员和地面上4人遇难。

10.The fulcrum is your foot or knee in a ground.

支点是你在地面上脚或膝盖。

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

巴西胡桃树需要地面上刺鼠散播种子。

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

这里气温比沙漠地面上低得多。

13.Some facilities on the ground do not.

一些设备是地面上医院所不具备。

14.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凶猛怪兽。

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

鸟儿们似乎和地面上观众一样玩得很开心。

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

可单单靠地面上猎物谋生也不会容易到哪去。

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

飞机上乘客和地面上人们听到一声巨响。

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

实际上, 雾气就是落在地面上云朵。

19.Then they will wander into traps placed on the ground.

然后，它们会进入放置在地面上陷阱中。

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

这使得地面上植被成为了潜在火灾传播源。