Can you solve the bridge riddle 

你能解开桥之谜吗

来源视频

Taking that internship in a remote mountain lab might not have been the best idea. 

Pulling that lever with the skull symbol just to see what it did probably wasn't so smart, either, but now is not the time for regrets because you need to get away from these mutant zombies fast.

去深山实验室实习也许不是一个好主意。

拉下画着骷髅头的控制杆 仅仅为了看看会发生什么大概也不是什么明智之举，但现在可不是后悔的时候，因为你得赶紧摆脱这群变异的僵尸。

With you are the janitor, the lab assistant, and the old professor. 

You've gotten a headstart, but there's only one way to safety: across an old rope bridge spanning a massive gorge. 

You can dash across in a minute, while the lab assistant takes two minutes. 

The janitor is a bit slower and needs five minutes, and the professor takes a whole ten minutes, holding onto the ropes every step of the way.

与你同行的还有：门卫、助理和老教授。

你们甩开了僵尸，但前方只有一条路横跨大峡谷的古老的吊桥。

你过桥需要一分钟，助理需要两分钟。

门卫慢一点，需要五分钟，教授需要整整十分钟，因为他每走一步都紧紧抓住绳索。

By the professor's calculations, the zombies will catch up to you in just over 17 minutes, so you only have that much time to get everyone across and cut the ropes. 

Unfortunately, the bridge can only hold two people at a time. 

To make matters worse, it's so dark out that you can barely see, and the old lantern you grabbed on your way only illuminates a tiny area.

Can you figure out a way to have everyone escape in time?

教授计算出来仅仅在17分钟之后，僵尸就会追上你们因此只有这么多时间 让所有人过桥并剪断绳索。

不幸的是，吊桥只能承载两个人的重量。

更糟糕的是天昏地黑，眼前伸手不见五指，而你一路提着的灯只能照亮一小块地方。

你能想出一个方案，让所有人及时逃脱吗？

Remember: no more than two people can cross the bridge together, anyone crossing must either hold the lantern or stay right next to it, and any of you can safely wait in the dark on either side of the gorge. Most importantly, everyone must be safely across before the zombies arrive. Otherwise, the first zombie could step on the bridge while people are still on it. Finally, there are no tricks to use here. You can't swing across, use the bridge as a raft, or befriend the zombies. Pause the video now if you want to figure it out for yourself!

请记住：吊桥只能承载两个人的重量，任何人在桥上时必须 要么提着灯，要么紧挨着灯，任何人都可在峡谷两侧的黑暗中安全等待。最重要的是，所有人必须 在僵尸到达之前安全通过吊桥。否则，当僵尸走上桥时，有人还在上面。最后，这里不能使用任何花招。不能荡过去，不能把桥用作木筏，不能和僵尸做朋友。请马上暂停视频 如果你想自己寻找答案。

Answer in: 3 

Answer in: 2

Answer in: 1 

At first it might seem like no matter what you do, you're just a minute or two short of time, but there is a way. 

The key is to minimize the time wasted by the two slowest people by having them cross together.

And because you'll need to make a couple of return trips with the lantern, you'll want to have the fastest people available to do so. 

So, you and the lab assistant quickly run across with the lantern, though you have to slow down a bit to match her pace.

After two minutes, both of you are across, and you, as the quickest, run back with the lantern.

Only three minutes have passed. 

So far, so good.

答案揭晓：3

答案揭晓：2

答案揭晓：1

起初似乎无论怎么安排都得超出一两分钟，但可行的方案是存在的。

最关键的想法是最小化最慢的两个人所浪费的时间这可通过让他们一起过桥来实现。

因为需要有人提着灯返回所以得让速度最快的人来完成这个任务。

综上，你和助理提着灯快跑过桥虽然你必须为她而放慢一点脚步。

但两分钟后，你俩都过桥了速度最快的你提着灯跑回去。

现在仅仅过了三分钟。

目前为止，一切顺利。

Now comes the hard part.

The professor and the janitor take the lantern and cross together.

This takes them ten minutes since the janitor has to slow down for the old professor who keeps muttering that he probably shouldn't have given the zombies night vision. 

By the time they're across, there are only four minutes left, and you're still stuck on the wrong side of the bridge.

现在最耗时的部分来了。

教授和门卫接过灯一起过桥。

这用了他们十分钟，因为门卫必须为教授放慢脚步，教授嘴里咕哝着 也许当初他不该给僵尸夜视能力。

当他们过桥后，时间只剩下四分钟，可你仍困在危险的一侧。

But remember, the lab assistant has been waiting on the other side, and she's the second fastest of the group.

So she grabs the lantern from the professor and runs back across to you. 

Now with only two minutes left, the two of you make the final crossing.

As you step on the far side of the gorge, you cut the ropes and collapse the bridge behind you, just in the nick of time. 

Maybe next summer, you'll just stick to the library.

然而让我们回忆一下 ，就会知道助理在另一侧已经等候多时了，她是一行人中第二快的。

所以她从门卫手中接过灯跑过桥回到你那。

现在只剩两分钟，你俩最后一次过桥。

你一踏上峡谷的另一侧就剪断绳索，摧毁身后的吊桥，这样时间刚好赶上。

或许，明年夏天，你只愿泡在图书馆里