Something as simple as toothpaste has at least three chemicals that keep your teeth clean.

哪怕像牙膏这种简单的东西也至少有三种化学成分来保持牙齿清洁。

youdao

Even today when Will thinks that he won't be able to do something, he will look back to this experience and keep telling himself, "one brick at a time".

即使在今天，当威尔认为自己做不到一件事时，他会回顾这段经历，并不断告诉自己：“一次添一块砖”。

youdao

Couldn't I just line the perimeter of my yard with something to keep them at bay?

我不可以只用什么东西在我的院子周围画线来隔绝它们吗？

youdao

This means you will become good at something if you keep doing it.

VOA: special.2009.03.01

But as I said the other night at my press conference, I'm a big believer in the idea of persistence -- the idea that when the American people put their mind to something and keep at it, without giving up, without turning back, no obstacle can stand in our way, and no dream is beyond our reach.

WHITEHOUSE: Online Town Hall

We will just keep on going at it and hammering away until something gets done.

WHITEHOUSE: President Obama��s News Conference on the American Jobs Act

So having to remember that there are kids out there, especially, that look up to you is definitely something that you need to keep at the back of your mind.

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