OK. We can get some more tomorrow. We should finish the floor now. Can you take the other end of this piece of wood? Now you have to pull it to make the surface smooth like that.

好吧。我们明天再多买些。现在我们应该把地板弄好。你能抓住木板的另一端吗？现在你要来回拉动木板，使它的表面象那块儿木板一样光滑。

If you do not let me have it, that will be a sign of weakness and no one will trust your laws any more.

要是您不准许我得到它，那将是一种软弱的表现，人们将不再信你们的法律了。

This is because the surface of the earth is not flat but round.

因为地球表面不是平的，而是圆的。

They sighed and cried out for more water, but food and water were only given out once a day.

他们叹息着，嚷着要水喝，而水和食物每天只发放一次。

Modern machines can make the copy bigger or smaller, lighter or darker and copy onto both sides of the paper.

代机器可以放大、缩小、制作较亮的或较暗的复印件，也可以在纸的两面复印。

Some types of birds cannot fly.

有些种类的鸟不会飞。