They are the toughest opponents.

She was the roughest toughest frail

Yet, their draglines are not the toughest.

He looked the toughest of all the challengers.

This was probably the toughest place to explore.

The world's strongest, toughest fiber is spider silk.

And you know your toughest kids are never absent.

The first date back is always the toughest, Harry.

This shot is one of the toughest you can imagine

But some of the toughest hurdles have been the technical ones.

That he's about the toughest nut I've ever had to crack.

She definitely said it was the toughest thing she had ever gone through.

From now on, you will become the toughest fifteen year old in the world.

The rough house, the rough house. It's the roughest, toughest joint ya ever seen.

Well, what's gonna happen to my reputation as the toughest sheriff on the mountain, huh?

Bill Gates Well Bruce, where do you think the toughest places are going to be?

Los Angeles is the largest police beat in the country... and one of the toughest.

They attract the strongest principals into the toughest schools, and the most talented teachers into the most challenging classroom.

And these vaccinators, these volunteers, they have got to dive headlong into some of the toughest, densest urban slums in the world.

Being that the team leader, he gets the toughest problems that is, those problems where the changes of screwing up are highest.

It's been hypothesized that orb weaving spiders, like this argiope here, should have the toughest dragline silks because they must intercept flying prey.

In fact, the toughest dragline in this survey is this one right here in this white region, a non orb web weaving spider.

And they even talked about feeling happier, even though they were in pain, even though they were tackling the toughest challenge of their lives.

The head of pediatric psychology from a local hospital comes to consult with faculty and parents on the toughest personal situations in students' home lives.

What I'm going to show you for a couple of minutes is a facility that I built in the toughest neighborhood in Pittsburgh with the highest crime rate.

The four places where you saw, that we've never stopped northern Nigeria, northern India, the southern corner of Afghanistan and bordering areas of Pakistan they're going to be the toughest.

The first top spider silk is called Darwin's bark spider and it's about seven times stronger than the aramid fiber, and it's considered to be the toughest in the world.

He was supposed to be the toughest interview that anybody would ever do because he was famous for being silent, for never ever saying anything except maybe a word or two.

And then, in one of the most important, tenacious and toughest reservoirs of the polio virus in the world, we found that our vaccine was working half as well as it should have.

'I went back to my office after a week, 'after the toughest few minutes of my life, 'telling Tommy Ray's wife she was a widow, 'and the kid that his daddy was gone forever.

He took one look at Sudhir, who was going to go do some surveys for him, and decided he knew exactly the place to send him, which was to one of the toughest, most notorious housing projects not just in Chicago, but in the entire United States.

Now we have some pilot things that do this at the 60 to 80 percent level, but getting up to that full percentage, that will be very tricky, and agreeing on where these CO2 quantities should be put will be hard, but the toughest one here is this long term issue.

That's why schools in almost every state, some in the toughest neighborhoods around, have answered our challenge to raise their standards for teaching and learning, not by teaching to a test, but by expanding creativity, and improving curriculums, and focusing more on kids who are hardest to reach so that we give every child a fighting chance.