Lead researcher Natalie Briscoe said there is a five-degree difference in temperature between a tree trunk and the air.

首席研究员娜塔莉·布里斯科说，树干和空气之间有5度温差。

The hotter the food or drink is, the more of a difference in temperature, so blowing on hot stuff is best.

食物或饮料越热，温差就越大，所以吹热的东西是最好的。

So, cool can be a degree, if you will, of difference in temperature.

所以，如果你愿意，凉爽可以是温度差异的度数。

Now, you might be wondering how heat gets transferred, if there’s no difference in temperature.

现在，您可能想知道如果温度没有差异， 热量是如何传递的。

Now, you might be wondering how heat gets transferred, if there's no difference in temperature.

现在，您可能想知道热量如何 在不改变温度的情况下传输。

In those cases, there are only very tiny differences in temperature, and they're immediately eliminated.

在这些情况下，程度差异很小 热，但立即被删除。

Over time, as the difference in temperatures, that warm moist air near the surface and that cooler air on top mix together.

过一段时间，由于温差，地表的温暖的湿空气会遇到顶部冷空气。

All by itself it creates these fearsome cyclones through the difference in temperature between its currents and the superimposed layers of air.

正是它的水流中的空气层温度差造成了这可畏的飓风。

In the summer months the difference in temperature bet ween London and the north can be as much as nine degrees!

在夏季，伦敦和北部的温差可高达九度！

Without ocean currents circulating warm and cool air across the planet, you'd have a lot more extreme differences in temperature and climate.

如果没有洋流在地球上循环暖空气和冷空气，就会出现更加极端的温度和气候差异。

Well, remember how we described isothermal processes last time: In those cases, there are only very tiny differences in temperature, and they’re immediately eliminated.

好吧，请记住我们上次如何描述等温过程：在那些情况下，温度差异非常小， 并且会立即消除。

This depends on there being a big difference in temperature between surface water and the water a couple of kilometres below the surface, and this occurs in tropical coastal areas.

这主要依靠的是表面的海水和海面以下几千米水域海水的温度差，这一般出现在热带海岸区域。

The light and dark patches show differences in temperature by fractions of a degree, revealing where matter was beginning to clump together to form the first galaxies shortly after the Big Bang.

亮斑和暗斑显示温度相差几分之一度，揭示物质开始聚集在一起的位置在大爆炸后不久形成第一个星系。

There's usually a lot of wind shear in winter because of the big difference in temperature and air pressure between the equator and the Arctic, Northern Illinois University meteorology professor Victor Gensini said.

由于赤道和北极之间的温度和气压差异很大， 冬季通常会有很多风切变。