It's about tens of meters in diameter.

它的直径大概有几十米。

There are also tens of sites explored for development.

此外，还有数十个地方正在进行开发。

The thumb and the forefinger made different shapes to represent the tens, so this would be ninety-seven.

拇指和食指做出不同的形状来代表十位，所以这是 97。

Some researchers say those kinds of missions aren't worth the tens of billions of dollars they cost.

一些研究人员表示这样的任务不值得耗费数百亿美元的巨资。

We're talking roughly 400 million rail passengers and that doesn't count the tens of millions who travel by air or use other forms of transportation.

大约有4亿铁路旅客，这还不包括数千万乘坐飞机或使用其他交通工具的旅客。

And in humans, we've been getting smaller teeth over  the last few tens of thousands of years.

在过去的几万年里，人类的牙齿越来越小。

Like the rest of us, sexual reproduction is how Pando came into the world in the first place all those tens or hundreds of thousands of years ago.

与我们一样，有性繁殖是潘多在几十万或者几百万年前最初来到世上的方式。

The actual iceberg damage appears to be confined to a maybe a 30-foot length of the bow; wasn't like a gash and it wasn't tens of small gashes.

实际的冰山造成的损坏似乎仅限于大约 30 英尺长的船头，它不像一个伤口，也不是几十个小伤口。

But what about big impacts, the ones that leave craters tens of kilometers  wide and cause huge amounts of devastation?

但是那些留下几十公里宽的陨石坑并造成巨大破坏的大撞击呢？

Yeah. So LIGO is sensitive to black holes that are maybe tens of times the mass of the sun up until about 100 times the mass of the sun.

对。LIGO 对黑洞很敏感，这些黑洞的质量可能是太阳质量的几 10-100 倍左右。

Another idea is to make surfaces that are covered in itty bitty ridges or polymer cones, that are just tens of nanometers in size, thousands of times smaller than the width of a human hair.

另一种想法是使物体表面覆盖极小的脊，或聚合物锥，尺寸仅有几十纳米，比一根人类头发的千分之一还小。

In another half-century, the people of the central valleys should have hundreds of millions to throw away more easily than in 1900 they could throw away tens; and by that time they might know what they wanted.

再过半个世纪， 与 1900 年相比， 中部山谷的人们应该更容易扔掉数亿； 到那时他们可能知道自己想要什么。