原文视听

The Australopithecus teeth, because they're big and flat,
南方古猿的牙齿 大而平
were very effective at crushing this food and fracturing it into two pieces.
因此对碾压食物 将其分成两半非常有效
Oh, that's cool.
太酷了
That certainly fractured it!
肯定把胡萝卜碾断了
But how did they deal with raw meat?
但是它们咬生肉如何呢
OK, it's set, my hands are out.
放好了 我手出来了
Big, flat teeth crushing raw meat doesn't work very well.
大而平的牙齿碾压生肉 效果不怎么好
Think of trying to smash a steak with a hammer -
想象一下用榔头猛捶牛排
it doesn't break it into many pieces,
它没法把牛排碾碎
it turns it into a bloody mess.
只是将其变成血肉模糊的一片
Peter now prepares the jaws of a more recent ancestor
彼得现在在安装一个 晚一些出现的古人颌骨
who may have been a hunter.
他可能是名猎人
Are these teeth more effective at dealing with this new diet?
这些牙齿更擅长咀嚼这种新食物吗
Wait, wait, wait!
等下等下
These are sharp teeth!
这些牙齿可锋利了
I don't want to get bitten by a 1.7-million-year-old mouth!
我可不想被170万岁的牙齿咬到
Let's see what kind of damage we did. - OK.
让我们看看它的破坏力 -好的

重点解释

But how did they deal with raw meat?但是它们咬生肉如何呢

deal with讨论；处理

I think we should work out a strategy to deal with this situation.

我想我们应该制订出一项行动计划，用来对付这种情况。

She has a lot of correspondence to deal with.

她有大批信件需要处理。

Big, flat teeth crushing raw meat doesn't work very well.大而平的牙齿碾压生肉，效果不怎么好

work well工作很好

The heating system in this block doesn't work well.

这个街区的供暖系统不太好用。

Owing to my lack of experience, I didn't do the work well.

由于缺乏经验，我没有把工作做好。

it turns it into a bloody mess.只是将其变成血肉模糊的一片

turn ... into ...把 ... 变成 ...

Caterpillars turn into butterflies.

毛毛虫可以变成蝴蝶。

His early experience turn him into a passionate social reformer.

他早年的经历使他变成了一个狂热的社会改革者。