Desert sand shaped by wind is more rounded than sand shaped by water.

风的沙漠沙比水的沙更圆。

How do these differences come about?

这些不用是如何的？

They hold a shape in the mouth.

嘴巴。

These disks are the remnants of planetary formation.

这些圆盘是行星的剩余物质.

There is an unlikely alliance forming between Brazil's leftwing and rightwing parties.

巴西左翼和右翼政党之间了似乎不太可能的联盟。

Some valleys are formed by flowing water, and others are formed by glaciers.

些山谷是由流水的，另些是由冰川的。

They can make two dimensional forms as sheets, or three dimensional crystals.

它们能片的二维结构，或三维晶体。

Stalagmites grow up where lime laid and drips hit the cave floor.

含有灰质的水滴落床笋。

Entirely new business models are emerging; three main ones were identified by the report's authors.

全新的商务模式正在，报告作者总结出其中三种。

So you have an oxygen with 2 hydrogens and it forms this big lattice structure.

它们了这大的晶体结构它们了这大的晶体结构。

Perfectionism develops in our formative years, and so young people are more vulnerable.

完美主义是在我们性格阶段的，所以年轻人更容易受到伤害。

That material rapidly coalesces, and bingo, you've got a moon.

这些物质迅速结合，没错，之后就了月球。

So a lot of it just comes down to grunt work.

所以量变质变。

6 billion years ago the earth forms.

46亿年前地球。

And this is contrasted by the lady's social skills and common sense.

这与剧中女性鲜明对比。

New shores were formed and totally different creatures would have washed up onto the shores.

新的海岸了，完全不同的生物被冲向了海岸。

And those massive amounts of particles can cause clouds to form.

排出的巨量微粒便会云朵。

Today's rain is a sharp contrast to yesterday's sunshine.

今天的雨与昨天的阳光鲜明对比。

And they can see flash flooding very quickly.

并且洪水的速度很快。

Which is the start of cancer formation.

这正是癌症的起点。