Why are most objects opaque, while glass is transparent?

A "caterpillar" robot made of pig skin and magnets can carry drugs and deliver them precisely into t

yonggewaijiang

1 View

They say diamonds are forever, but they can be burned and broken.

haoqiwanhuatong

18 Views

Yemen is the first country to be destroyed by drugs, even children are not spared. How tragic is it?

tanmi

10 Views

Unboxing video!! – The Mechanical Series~

jixiepangke

111 Views

3unshine- Bubble Raising(Abby Solo)- Official Music Video

3unshine

55 Views

I advise you to quit porn (enlarging testicles)

xuetudexin-

13 Views

The visual art of using waste glass into scented candles.

makesyxiangfen

2.6K Views

Let's take a look at the amazing workplace of skilled workers 9.2

jixiepangke

113 Views

Today's stress-relieving video: an awesome mechanical series~

jixiepangke

10 Views

Transparent Cheongsam Coconut Sheep!

Yimengjun

30 Views

Let's take a look at some satisfying work scenes! 10.9

jixiepangke

129 Views

Spoon/fork: If I had known this was a bad factory

xiaokechibaobao

41 Views

The amazing workplace of skilled workers!!

jixiepangke

95 Views

【光死夏/MAD】Even if it's fake, I still love you

shizeaidamowang

16 Views

20 common mechanical transmission structures, I'm exhausted

Jinzhengmeiyongde

10 Views

[Minecraft animation] The magical effect of transparent potion(?)

kat___mi

48 Views

The man as a speed bump: the skilled worker

yaki1

13 Views

A group of bees sit in a "classroom" to study. Is that so cool? In fact, they are trained little ins

YouTubejingcaishipin-

9 Views

Why doesn't it hurt when a needle is stuck in my finger?

yaki1

24 Views

Where do all the farts go when you hold them in?

lilunkexue

2 Views