Plastic is made out of long, carbon chains.

塑料由碳链组。

What is the longest mountain chain in the world?

世界上最脉是哪座？

History doesn't have this long chain.

事实上历史没有这么连续性。

What is the Earth's longest mountain chain above sea level?

地球上海拔最高脉是什么？

It actually has a very long and somewhat problematic supply chain.

它实际上有一个很很有问题供应链。

They're polymers, made of long chains of repeating chemical units.

它们是聚合物，由链重复化学单元组。

Comets and asteroids could be the missing links of a long chain.

彗星和小行星可能是链中缺失一环。

Like DNA, RNA is made up of a long chain of nucleotides.

和 DNA 一样，RNA 是由一串核苷酸组。

With them, one of the links in a long chain of evolution snaps.

因为这样 一个生物进化链断开了。

They believe that they are part of a long chain, or line of people.

他们认为自己是一大族人一部分。

Around her neck she wore a long gold chain, from which hung a large medallion.

子上挂着一串很大金项链，项链上吊着一个挂饰。

Let's take a look at a longer food chain that also begins with grass.

让我们来开另一组稍微大一点食物链，仍然设生产者为草。

In mucin, long chains of sugars are attached to specific amino acids in the protein backbone.

在黏蛋白里，一串糖 会黏着於特定氨基酸位於蛋白质骨干。

It's a polymer, meaning it's made of long chains of repeating units of atoms strung together.

它是一个聚合物，说明它是由一串相同原子而。

A group can be anything from a single atom, to a long chain, to rings.

一组可以是一个单原子、链或结构环。

Volcanoes form the backbone of the longest mountain chain on our planet, the Andes of South America.

火构了地球上最系主干，南美洲安第斯脉。

There's other insects out there that eat predominately wax which is also full of long chain polymers.

还有其他昆虫主要以蜡为食, 蜡也含有链聚合物。

Proteins are long chains of amino acids that do all kinds of important things inside the human body.

蛋白质是氨基酸链，在人体内起着各种重要作用。

Some of the world's best mountain scenery is available within the 500-kilometer long chain of the Southern Alps.

一些举世无双光水色可在这绵延500公里南阿尔卑斯脉之间欣赏到。

It shows two long chains of molecules spiralling around each other in a double helix, like a twisted ladder.

它显示了两条分子链在双螺旋中相互缠绕，就像扭曲梯子。