Pound for pound, this is the most terrifying dinosaur that ever walked the earth.

同样条件下，这是地球上出现过最恐怖的恐龙。

And that's why insects are so strong pound for pound or gram for gram.

这就是昆虫相对于自身体重来说如此强壮的原因。

It's a very it's about as potent a poison as is known actually pound for pound.

这是一种很强的毒药，它的效力和已知的一磅毒药差不多。

That suggests that it really never did develop the same kind of power that a Tyrannosaurs did pound for pound.

这表明就算按单位体重来说它们也从未发展出过霸王龙那样的力量。

Pound for pound, longleaf old-growth is stronger than steel.

一磅一磅，长叶老树比钢强。

And that's why insects are so strong pound for pound… or gram for gram.

这就是为什么昆虫如此强大的原因。

Speaking of which, here's a fun fact: pound for pound, impacts on Mercury are more violent than they are on Earth.

说到这，这儿有一个有趣的事实：同样质量的撞击物，在水星上的影响比地球上更加剧烈。

For example, pound for pound, beef requires 15 times more feed to raise than carp, a freshwater fish farmed all over Asia.

例如，一磅一磅的牛肉需要比鲤鱼多 15 倍的饲料，鲤鱼是一种在亚洲各地养殖的淡水鱼。

It's one of the hardest transportation problems to solve. Pound for pound, liquid fuel contains 16 times more energy than the best batteries.

航空是最难解决的交通问题之一。平均下来液体燃料所含的能量是最好的电池的16倍。

Pound for pound, it's just as strong as steel, but because it weighs less, the whole structure has less mass.

一磅一磅，它和钢一样坚固，但因为它的重量更轻，所以整个结构的质量也更轻。

Pound for pound, some species of insects produce far fewer greenhouse gas emissions and require far less water and land to raise than some conventional livestock.

与某些传统牲畜相比，某些种类的昆虫产生的温室气体排放量少得多，饲养所需的水和土地也少得多。

So, one of the things about robotics that most people don't know is that pound for pound, robots have one-tenth the strength of humans or animals.

所以，大多数人不知道的关于机器人的一件事是，一磅一磅，机器人的力量只有人类或动物的十分之一。

But it's harder for smaller animals to stay warm compared to big animals, because they have to work harder, pound for pound, than a big animal to maintain the same temperature.

但对于小型动物来说，保持体温比大型动物难多了，因为要想维持同样体温的话它们必须比大型动物付出更多努力。