But what about the other 990 rocks without unobtainium?

但是没有难得素的其他990岩石呢？

The device never fails to detect unobtainium if any is present.

如果难得素存在的话，该设备绝不会检测不到。

The unobtainium detector he's been perfecting for months is finally ready.

他已经完善了几个月的难得素探测器终于准备好了。

An unobtainium rarity of 1% means that there are only 10 rocks with the precious mineral inside.

1％的罕见难得素意味着里面只有10块含有珍贵矿物的岩石。

The unobtainium detector he’s been perfecting for months is finally ready.

他几个月来一直在完善的 unobtainium 探测器终于准备就绪。

The answer lies neither in the overall chance of finding unobtainium, nor the overall chance of receiving a false positive reading.

答案不在于找到难得素的总体机会，也没有获得误读的总体机会。

What we're looking for, though, is the chance of finding unobtainium once we know that the device did return a positive reading.

然而，我们正在寻找的是一旦我们知道该设备确实返回正读数时找到难得素的机会。

What we’re looking for, though, is the chance of finding unobtainium once we know that the device did return a positive reading.

不过，我们正在寻找的是一旦我们知道该设备确实返回正读数后找到 unobtainium 的机会。

And Joe's rock could be any one of them, from the 10 that contain the mineral to the 99 that don't, which means the chances of it containing unobtainium are 10 out of 109 – about 9%.

乔的石块可以是其中任何一个，来自含有矿物质的10块以及99块没有的，这意味着含有难得素的机会是109个中的10个——大约9％。

And Joe’s rock could be any one of them, from the 10 that contain the mineral to the 99 that don’t, which means the chances of it containing unobtainium are 10 out of 109 – about 9%.

Joe 的岩石可能是其中任何一种，从 10 块含有矿物质到 99 块不含矿物质，这意味着它含有 unobtainium 的可能性是 109 块中的 10 块——大约 9%。