衡量一个物质的酸碱性的方法是pH值的大小。
The way of measuring how acidic or alkaline a substance is a scale called pH.
我们生在一个物质的世界，要否定钱、或说财富的作用是很难的。
We must say that money is not almighty, and there are many things which money can't do.
因此，它是一个物质的转移和能量的改变一样能够让大地之母去净化她自己。
Thus, it is a physical shift as well as the energy changes that will enable Mother Earth to cleanse Herself.
尽管它的视觉效果如此显著，但尘埃只是位于恒星之间的物质的一个次要组成部分，其密度极低。
Although its visual effect is so pronounced, dust is only a minor constituent of the material, extremely low in density, that lies between the stars.
不是每天都能遇见一个不着迷于物质财富的商人。
It is not every day that one meets a businessperson who is not obsessed with Mammon.
因此，我们的身体不断地把旧物质替换成新的，就像一个喷泉，或多或少地保持着它的形式和运动，但其中的水分子总是不同的。
Thus our bodies continuously exchange old substance for new, just like a spring which more or less maintains its form and movement, but in which the water molecules are always different.
它显然是通过抑制神经递质的释放来做到这一点的。神经递质是一种将神经冲动从一个神经元传递到另一个神经元的化学物质。
It apparently does this by inhibiting the release of neurotransmitters, chemicals that carry nerve impulses from one neuron to the next.
当一个大型天体撞击行星或月球时，物质会被抛射出去，从而在行星上形成一个洞，造成局部质量不足的现象。
When a large body strikes a planet or moon, material is ejected, thereby creating a hole in the planet and a local deficit of mass.
这种袋带有一个喷嘴，里面装满了一种能够变成胶状的粉末物质。
The bag is attached to a spout and filled with a powdered substance that turns into a gel.
石墨烯最早在2004年诞生于一个实验室，本质上是一层由纯碳原子组成的蜂窝状晶格层，薄到竟被认为是二维物质。
First produced in a lab back in 2004, graphene is essentially a single layer of pure carbon atoms bonded together in a honeycomb lattice so thin it's actually considered two-dimensional.
大多数天文学家认为，星系中心的大量物质是一个黑洞，它的引力导致气体旋转。
Most astronomers believe that the large concentration of mass at the galaxy's center is a black hole whose gravity is causing the gas to whirl.
测试并不弥补明显的社会不公，因此不能说明一个物质条件差的年轻人，如果在较好的环境下成长的话，会有多大才干。
Tests do not compensate for gross social inequality, and thus do not tell how able an underprivileged youngster might have been had he grown up under more favorable circumstances.
例如，测试并不弥补明显的社会不公；因此，它们不能说明一个物质条件差的年轻人，如果在较好的环境下成长的话，会有多大才干。
For example, tests do not compensate for gross social inequality, and thus do not tell how able an underprivileged youngster might have been had he grown up under more favorable circumstances.
当大陆板块停留在一个热点上时，从深层升起的物质就会形成一个广阔的圆顶。
When a continental plate come to rest over a hot spot, the material rising from deeper layer creates a broad dome.
“格罗玛·挑战者”号上的科学家是第一个发现海底下存在穹顶状物质的人。
Scientists aboard the Glomar Challenger were the first to discover the existence of domelike masses underneath the seafloor.
有一个便于取用的闪电“转换器”，材料科学家们就可以弄清当强大的电流与物质相遇时会发生什么。
With a lightning "switch" at their fingertips, materials scientists could find out what happens when mighty currents meet matter.
科学家推测，一个人大脑释放的这些化学物质的数量多少很可能表明这个人对他或她的医生有多大的信心。
Scientists theorized that the amount of these chemicals released by a person's brain quite possibly indicates how much faith the person has in his or her doctor.
最近的一项研究似乎指出了一个事实，当物质和反物质最初被创造出来的时候，有更多的物质粒子，这使得我们生活的宇宙得以形成。
A recent study seems to point to the fact that when matter and anti-matter were first created, there were slightly more particles of matter, which allowed the universe we all live in to form.
这种化学物质究竟是如何发挥作用的仍然是一个谜。
How exactly the chemical plays a role still remains a mystery.
在仅仅满足物质需求的基础上，他为邻居的孩子们提供了一个学习如何修理自行车的机会。
Upon simply satisfying a material need, he has provided an opportunity for kids in his neighborhood to learn how to fix their own bikes.
所有的人都住在一个大工厂附近，她在当地的水里发现了一种叫做铬的化学物质。
All the people lived near a big factory and she discovered that there was a chemical called chromium in the local water.
这不是一个物质问题而是一个精神问题，是一个很实际的问题。
That's not really an existential question, or a spiritual one; mostly, it's a practical question.
这就是我第一个观点：它是物质的，第二个理由是，叙述故事有一个框架，它可以像一个手工品一样。
So, that's the first point: it's material. The second point is that narrative has a form, and that it can be constructed, built.
与之相对的是，我们真实地生活在一个用物质堆砌的社会，在这里，衡量事物的方式远不止它们对我们幸福感的可能性贡献。
Set against this is the fact that we clearly live in a society awash with materialism, where objects are valued way beyond their possible contribution to our happiness.
你可能已经认为它们是不同的物质了,这是一个非常重要的论断。
You have got to think that they are different substances and that is a very substantial claim.
水晶核心有物质和非物质的实相，一个是物质，另一个反物质的。
The Crystalline Core has a physical and non physical reality. One is matter, the other antimatter.
它很令人费解，为何他们的辣椒需要包括一个防结块的物质，如二氧化硅(也称为砂，或玻璃粉末)。
It's puzzling to try to understand why their chili would need to include an anti-caking agent such as silicon dioxide (also known as sand, or glass powder).
这幅图展示出宇宙是如何从起初的安宁状态进化为一个包含有巨大物质和能量的结构。
This shows how the Universe has evolved from a smooth state to one containing a vast amount of structure.
在近期的《天体物理与空间科学》杂志上，他对物质带有一个正引力荷，而反物质带有一个负引力荷的假设进行了概述。
According to his idea, outlined in the current issue of the journal Astrophysics and Space Science, matter has a positive gravitational charge and antimatter a negative one.
在近期的《天体物理与空间科学》杂志上，他对物质带有一个正引力荷，而反物质带有一个负引力荷的假设进行了概述。
According to his idea, outlined in the current issue of the journal Astrophysics and Space Science, matter has a positive gravitational charge and antimatter a negative one.
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