And birds that changed their tune over the years did better with the ladies.

研究发现，在这些年里声音有变化的鸟儿们更招异性的欢心。

If you look at the way most people speak or sing, the pitch slides.

如果你观察大多数人说话或唱歌的方式，音高是有变化的。

These forests exist where the climate has four seasons and the temperature changes throughout the year.

这类森林存在于四季分明、全年温度有变化的地方。

And we're going to talk about six different approaches to change.

一共有六种变化的方式，这六种方式。

Do you consider, Doctor, that there is immediate danger? the former asked.

医生，你认为他的病确实有突然变化的危险吗？

This, we know how corn starts behaves.

我们知道玉米淀粉会有怎样的变化。

And that's the control, so nothing should happen in that tube.

作为控制组，应该不会有任何的变化。

Only living things have the potentiality for change.

只有生物才有变化的潜力。

Equinoxes are directly related to the changing of the seasons.

春分和秋分跟季节变化有直接的。

Almost all living things have a circadian rhythm that changes with the light.

几乎所有的生物都有随光而变化的昼夜节律。

Now of course, it conjugates, doesn't it?

当然了，它会有词形的变化，对吧？

It was regular and it happened to involve four chords.

并且是有规律的变化而且涉及到四个和弦。

" You're smart enough! You'll see a change! "

“你非常聪明！你会有很大的变化！”

There are huge changes up ahead.

我们的世界将会有巨大的变化。

As soon as you cross over from England, syntax and pronunciation change sharply.

一旦你从英格兰过来，语法和发音就会有很大的变化。

Baking has many of the indications of a chemical change.

烘焙有许多化学变化的标志。

Hanfu comes in many styles that have changed over time.

汉服有许多随时间变化的风格。

Change in life comes in different forms; we could experience small changes.

生活中的变化有不同的形式；我们可能经历微小的变化。

Eustacia's features went through a rhythmical succession of them.

游苔莎的面部表就出现了这么个有节奏的变化过程。

It is worth trying to think why that is so.

想一想，为什么会有这样的变化，这是很有意义的。