This makes them a good source of energy.

这使它们成为一种很好的能量来源。

Biofuels are not always a clean source of energy.

生物燃料并不总是清洁能源。

Source of energy. An outlet that provides the electricity needed.

能量来源。一个能提供所需电力的插座。

That was an important source of energy on the earth.

毕竟在19世纪的那段时间。

Carbohydrates are one of your body's main sources of energy.

碳水化合物是身体的主要能源之一。

Fossil fuels remain the largest source of energy for most countries.

化石燃料仍然是大多数国家最大的能源来源。

As oil supplies decrease, we need to find other sources of energy.

由于原油的供应减少，我们必须寻找其他的能源来源。

For example: " The sun is the source of energy."

例如，太阳是能源之源。

Added sugars are a great source of energy, but provide no other nutrients.

添加糖是能量的一大来源，但却不含别的营养物。

In order to grow and reproduce, all life needs a source of energy.

为了生长和繁殖，所有生命都需要能量来源。

And in order to grow and reproduce, all life needs a source of energy.

为了成长和繁殖，所有的生命都需要能量来源。

Instead of using oxygen as their main source of energy, anaerobic bacteria use sulphur.

厌氧细菌不使用氧气作为它们的主要能量来源，而是依赖于硫。

Eliminating a stable and cheap source of energy right now seems a bit extreme.

现在放弃稳定而廉价的能源似乎有点极端。

Ultimately, the sun is the initial source of energy for nearly all living things.

归根结底，太阳是几乎所有生物最初的能量来源。

Today wind power is one of the fastest growing sources of energy on the planet.

时至今日，风能已是地球上增长最快的能源之一了。

It's crucial for world economies because it's their major source of energy.

这对全球经济至关重要，因为石油是主要的能源来源。

And the Sun isn't the only source of energy that autotrophs can harness, either.

太阳也不是自养生物可以利用的唯一能源。

During the Black Hole Era, that'll be the only source of energy in the Universe.

在黑洞时代，这将是宇宙中唯一的能量来源。

Global solutions are essential to addressing climate change and the need for clean sources of energy.

气候变化问题和对清洁能源的需求要*全球来解决。

You have all your other renewable sources of energy but this is a big challenge for humanity.

我们拥有可再生能源，但这对人类来说是一个巨大的挑战。