These are amounts of substances, or pollutants, within something.

它们是某物内物质或污染物的含量。

The only way to store these sorts of substances is with teflon.

储存这类物质的唯一方法是使用聚四氟乙烯。

He means amounts of substances, pollutants, found in something, which here is the air.

他指的是在某物中发现的大量物质，污染物，这里是指空气中。

The goal is to increase production of substances such as alpha-acids and essential oils.

目标是增加阿尔法酸和精油等物质的含量。

The liver produces enzymes, molecules that facilitate the breakdown of substances that enter the body.

肝脏合成酶，它是一种可降解进入身体的物质的细胞。

That points to the PAP's other problem : one of substance.

有关实质的问题。

All of these things require the movement of substances by either diffusion, osmosis, or active transport.

所有这些都需要物质通过扩散、渗透或主动运输的方式进行运动。

What we know is that a group of substances, the phthalates represent a threat to our health.

我们知道，一组物质，邻苯二甲酸盐，能对我们的健康构成威胁。

But how can simply using the internet cause changes in the brain similar to that of substance addiction?

但是，仅仅使用网络导致的大脑改变是怎样与物质成所导致的改变有相似性的呢？

A lot of spirit. In terms of matters of substance, we know that Iran is Israel's top concern.

真是很多精神。就实质问题而言，我们知道伊朗是以色列最关心的问题。

Such energy can be released during the interaction of about 1.5 kilograms of antimatter and 1.5 kilograms of substance.

而1.5 公斤反物质和 1.5 公斤物质的相互作用就能释放出这么多能量。

There is not a lot of substance.

内容不多。

People have allergies to all sorts of substances.

人们对各种物质过敏。

" Paste" is sort of a liquid thick substance.

“糊”是一种液体粘稠物质。

We should be discussing matters of substance.

【substance】我们应该讨论重大问题。

Takaro said parents should read labels and look for products that are free of substances like chemical colors and smells.

塔加罗表示，家长应该阅读标签，寻找不含化学颜色和气味等物质的产品。

Archimedes was not a man of grandeur and glamour, but of substance.

阿基米德不是一个伟大而富有魅力的人，而是一个实实在在的人。

Frank Randall had a history of substance abuse.

弗兰克·兰德尔有滥用药物史。

I work with people with severe addictions to all kinds of substances and behaviours.

我与对各种物质和行为严重上瘾的人一起工作。

An " atom" (atom) is the smallest amount of substance that can exist by itself.

一个“原子”（atom）是可以单独存在的最小量的物质。