The flood of electrical activity sparked by ECT alters that chemistry.

ECT触发大量电活动改变了这种化学作用。

It gets there when you eat, it comes from you blood and from chemical reactions in your body.

只要你吃东西，就会有屁, 屁在血液中和体内化学作用产生。

I can't. It's like this chemical thing, you know?

我说出来这像一种化学作用？

This is a result of melanin in the dead skin cells reacting with oxygen creating a black color —it's not dirt.

这死皮细胞中素和氧起化学作用生点点结果——东西。

And a big environmental change was also underway in the last half of the Eocene, thanks to the chemistry of mountain-building.

由于造山化学作用，始新世后半期也发生了巨大环境变化。

So it’s not just the snack you desire, but the smell itself is a perfect example of chemistry at work, stimulating your brain and body.

因此，这仅仅您想要零食，而且气味本身就化学作用完美例子， 可以刺激您大脑和身体。

Like, how a queen ant's nutrition and pheromones can chemically alter an ant embryo to either produce a soldier or worker ant based on what's needed for the colony.

比如，蚁后营养和信息素如何通过化学作用改变蚂蚁胚胎，使其根据蚁群需要产生兵蚁或工蚁。

Then came the chemical action of nature; in the depths of the seas the vegetable accumulations first became peat; then, acted upon by generated gases and the heat of fermentation, they underwent a process of complete mineralization.

然后大自然化学作用；在海洋深处， 植物堆积物首先变泥炭；然后，在产生气体和发酵热量作用下，它们经历了完全矿化过程。

They also said that findings from animal cases suggest that their addiction-like behaviors happened only when they had intermittent access to sugar, believing those behaviors to come from the intermittent access, not the actual neurochemical effects of sugar.

他们还表示， 动物案例发现表明， 只有当它们间歇性地获取糖时， 才会发生类似瘾行为，他们相信这些行为来自于间歇性获取，而糖实际神经化学作用。