But rivers don't have umbilical cords, so why do they have innies and outies?

但是河流又没有脐带，那它们为什么会有凹凸的区别呢？

That's why you can see all those bumps and cracks.

这也正是你可以看见路面细小凹凸和裂缝的原因。

Anger grabbed it and stepped on the broccoli's bumpy surface.

怒怒一把将西蓝花抓住，踩在西蓝花凹凸不的表面。

The ground at the lunar south pole is uneven making landing there difficult.

月球南极的地面凹凸不，使着陆变得困难。

Yeah, but did you see the dents in his knuckles? That means he's artistic.

但是，你看见他指的凹凸么？ 那说明他是个艺术家。

They adorned the smallest crevices, some sprawling, others standing or hanging like coral outgrowths.

它们把最轻微的凹凸都铺，有的是摆开来）有的是竖起或垂下，像珊瑚形成的瘤一样。

She skillfully travels the uneven surface of the soccer field.?

她熟练地在足球场的凹凸不的表面穿行。

Can't be greater. If you ride on bumpy, hilly roads, a mountain bike is what you need.

系很大呢。如果你在凹凸不的山路骑，就要选用山地车。

The hard uneven pavement is under us, the soft deep mud is on either side.

我们脚下是坚硬的凹凸不的路面，边都是柔软的深泥。

We refer to it a lumpy potato.

我们称之为凹凸不的土豆。

This is a depiction of that lumpy potato.

这是对那个凹凸不的土豆的描绘。

We've also got bumpy colons, which sounds very sexy, whereas carnivorous animals typically have a smooth colon.

我们的结肠也是凹凸不的，发音听起来很性感，而肉食动物的结肠通常是光滑的。

This lava is all blocky and bumpy as it flows.

这些熔岩在流动时都是块状且凹凸不的。

I stared at the bumpy green mask and burst out laughing.

我盯着凹凸不的绿色面具，突然笑起来。

If bumps show up on a sidewalk, it's the city's job to repair it and smooth it out again.

如果人行道出现凹凸不的情况，城市的工作是修复它并使其恢复整。

A few yards ahead, I saw the bumpy red formations of clamshell reef.

前方几码处，我看到凹凸不的红色蛤壳礁。

The bright blue uneven walls were lined with rickety shelves filled with secondhand books.

明亮的蓝色凹凸不的墙壁摆满摇摇晃晃的书架，书架摆满二手书。

Museum visitors can touch the piece and feel the ridges and depressions.

博物馆的参观者可以触摸这件作品，感受它的凹凸不。

But by carefully looking at the moon, Galileo noticed lots of pointy bumps and shadows.

但通过仔细观察月球，伽利略注意到许多尖状的凹凸和阴影。

So, now we know about both elastic and inelastic collisions.

所以，现在我们有于者的信息 柔软而有弹性的凹凸。