The second most common object: metal cans.

第二多的东西是铁罐。

The metal can be used to power new satellites, explained Herve Astier.

赫维·阿斯迪亚解释说，这种金属可以用来为新的卫星提供动力。

And after the robots do the rounds, the heavy metals can be stripped away.

而且机器人净化处理后，从水里的重金属就已经被去除了。

Metal catalysis can be problematic in the sense that the metals can be toxic.

金属催化可能是有问题的，因为金属可能是有毒的。

The book includes easy projects like building a " bee hotel" out of an empty metal can and pieces of paper.

这本书包括一些简单的项目，比如用一个空金属罐和几张纸建造一个“蜜蜂旅馆”。

Metal can also be a problem, because it’s really good at reflecting electromagnetic waves.

金属也可能是个问题，因为它非常擅长反射电磁波。

The microbes that could otherwise break down plastic bags or metal cans do not thrive in these deep, cold, dark waters.

而降解塑料袋或铁罐的微生物无法在这些陡峭、寒冷且阴暗的水中繁衍生息。

Nickel-iron meteorites, in other words, metal, can also look red.

镍铁陨石，换句话说，金属，也可以看起来是红色的。

The metals can then be recovered with various separation and filtration methods.

然后可以通过各种分离和过滤方法回收金属。

In fact, many of Earth's most valuable metals can also be found in asteroids.

事实上，许多地球上最有价值的金属也可以在小行星中找到。

Researchers believe less toxic metals can still work, but may require stronger magnets to be manipulated.

研究人员认为，毒性较小的金属仍然可以工作，但可能需要更强的磁铁才能进行操作。

So if you buy food in a can, it's usually a tin can – a metal can.

因此， 如果您购买罐装食品，通常是锡罐——金属罐。

So, metals can shine in lots of different ways, but it all comes from the same thing: a bunch of electrons moving around.

所以金属闪耀各种光泽，都源于相同的道理，就是那些电子的运动。

Metal can become extremely brittle at such low temperatures, so we're pretty sure you know what's coming next.

金属在如此低的温度下会变得非常脆弱，所以我们很确定您知道接下来会发生什么。

These freely moving electrons are in fact the main reason that metals can conduct heat and electricity so easily.

这些自由移动的电子实际上是金属能够如此容易地导热和导电的主要原因。

Especially since rusty metal can create jagged wounds with lots of deoxygenated dead tissue for them to latch on to.

尤其是生锈的金属会造成锯齿状伤口，伤口处会有大量缺氧的死组织，它们会依附在这些组织上。

And now we know that metal draws the power of the sky, and that metal can be made to give it forth.

现在我们知道金属可以吸取天空的力量，并且可以制造金属来释放它。

But you have to be careful as the metal can actually affect the fabric and so you can't expect to get a lot of wear out of fabrics treated in this way.

但是你得很小心，因为金属会磨损织物，用这种方法处理的织物穿不了太久。

" Can" , it's either I can do something or it's a metal can container for a drink or whatever; a tin can for food or drink.

“罐”，要么是我能做某事， 要么是一个金属罐容器， 用来装饮料什么的； 装食物或饮料的锡罐。

If given time to adjust, some metals can tolerate extreme heat and cold just fine, but sudden drops or spikes in temperature can attack metal at the molecular level, severely weakening it.

如果有时间进行调整，一些金属可以很好地耐受极热和极冷， 但温度突然下降或升高会在分子水平上攻击金属， 严重削弱它。