Right. - Why don't you get a photo off the cast?

何不直接要石膏照片?

The milk cartons were the outer containers for plaster of paris molds.

牛奶盒就是熟石灰容器。

It is one of the oldest Model United Nations simulations in the world.

HMUN是世界上历史最悠久 拟联合国之。

This was the genesis of modular arithmetic, a critical concept now ubiquitously used in computer science and cryptography.

这就是算术起源，算术是现在计算机科学和密码学中普遍使用个念。

" R" divided by the length of " R" .

用向量R除以。

His target during his movement south-west was the Khwarazm Empire, located in the area of modern Kazakhstan, Uzbekistan, and Iran.

他向西南进军目标是位于今天哈萨克斯坦、乌兹别克斯坦和伊朗境内花剌子帝国。

Genghis Khan sent ambassadors to the Shah of Khwarazm, requesting he submit to him and his empire, and in reply, the Shah assassinated them.

成吉思汗派使者去见花剌子国王，要求他臣服于他和他帝国，作为回应，国王暗杀了他们。

My dad and watched as we carefully poured the molten lead through a small hole in the top of the plaster of paris cube.

爸爸注视着我们小心翼翼地把铅液注入到熟石灰顶部小孔中。

As Mr Rudenko observes, Mr Zelensky and his novice crew faced these challenges with more memes in their armoury than policies.

正如 Rudenko 先生所观察到，泽伦斯基先生和他新手团队面对这些挑战时，他们军械库中有更多因而不是政策。

It becomes ridiculously dense: a single cubic centimeter of it, the size of a six-sided die, has a mass of a million grams — one metric ton.

每立方厘米，六面大小，其质量就是百万克，也就是吨。

So... when we divide " R" by the length of " R, " that would be a vector of unit length parallel to " R" .

所以...当我们用向量R除以，可以得到和R方向相同单位向量。