Once it's come up to a boil, you get that wonderful layer of " scum."

一旦沸腾起来，你会发现上面有一层妙的“渣”。

We see how the shores on our entire side are completely full of scum.

我们看到我们整个海岸都是渣。

This means that the fish themselves when the scum sticks to the mesh, can avoid the net.

这意味着，当渣粘在网眼上时，鱼自己就可以避开网。

The lime joins with the sour acidsthat are in the juice, and forms a green scum, which is taken off.

石灰跟甘蔗汁里的酸性成分化合, 变成一种绿色的渣。这层渣要掉。

He pictures the evil Pope skimming scum from soup bowls.

他想象着邪恶的教皇从汤碗中撇渣。

Where you used to see pond scum, now think of hope.

过看到渣的地方，现在想到了希望。

It's also been known as pond scum.

它也被称为渣。

So that's right, my career started with pond scum.

没错，我的职业生涯是从渣开始的。

It's called pumice, from an old word meaning like foam or froth.

它被称为石，来源于一个古老词汇，意思是像泡沫或渣一样。

Do you ever notice the scum that happens?

你有没有注意到那种渣的出现？

Now, remember that little pond scum critter Tetrahymena?

现在， 还记得那个小渣生物 Tetrahymena 吗？

That scum and all those bubbles?

那些渣和所有那些泡沫呢？

It reacts with the calcium and magnesium ions of hard water to form insoluble precipitate called scum.

它与硬水中的钙镁离子反应，形成不溶性的沉淀物——渣。

And when we removed our pond scum's telomerase, their telomeres ran down and they died.

当我们除渣的端粒酶时，它们的端粒就会流失并死亡。

So it was thanks to their plentiful telomerase that our pond scum critters never got old.

因此， 正是由于它们丰富的端粒酶，我们的渣生物才不会变老。

A thick oily scum oozed out from below the stone and stained the water round, rising slowly to the surface.

一层厚厚的油状渣从石头下面渗出， 染红了水面， 缓缓出水面。

A faintly rotting smell, like pond scum on a hot July day, hit Aru's nose, and she tried not to gag.

一股淡淡的腐烂气味， 就像炎热的七月里里的渣一样，扑鼻而来，她努力不作呕。

The tiniest puddle of replicating pond scum on an exoplanet would still be the biggest discovery we've ever made, ever, about anything.

在系外行星上复制渣的最小水坑仍然是我们有史以来最大的发现, 曾经, 关于任何事情。

The real-life losers – dropouts and junkies, petty criminals locked away for decades – drifted towards the finish-line banners flotsamming on the dreamworld's trackpool.

现实生活中的失败者——辍学者、瘾君子以及被关押多年的 minor criminals ——漂向了终点线的旗帜，这些旗帜像渣一样漂在梦境世界的跑道中。

As the steel melts, the flux forms a slag that floats on the surface, where it prevents the liquid steel reacting with air and creating impurities.

当钢熔化时， 溶剂形成一层渣， 在表面，防止液态钢与空气反应产生杂质。