All existing supplies of helium ought to be conserved and released only by permit, with medical uses receiving precedence over other commercial or recreational demands.
现有的所有氦供给应该被保存下来，并且只有在获得许可的情况下才能释放，医疗用途优先于其他商业或娱乐需求。
Firstly, all existing supplies of helium ought to be conserved and released only by permit, with medical uses receiving precedence over other commercial or recreational demands.
首先，所有现有的氦供应应该被保存下来，并且只有在获得许可的情况下才能释放，医疗用途应优先于其他商业或娱乐需求。
Other churches were conserved in previous years.
其他教堂则在前几年得以保存下来。
Momentum is said to be "conserved", that is, once you build it up, it has to go somewhere.
动量被认为是“守恒的”，也就是说，动量一旦被建立，就一定会转移到其他地方。
Within seven years of excavation, the Dover boat had been conserved and displayed, but it was apparent that there were issues that could not be resolved simply by studying the old wood.
经过长达7年的挖掘，多佛的船得到了保护和展示，但有些问题显然不能只通过研究陈旧的木材来解决。
Total energy must be conserved.
总能量必须是守恒的。
动能是守恒的。
Momentum, however, was conserved.
但动量却守恒。
Energy is conserved in all of its forms.
能量在其任何形式都是守恒的。
And so the total mechanical energy is conserved.
所以总机械能，守恒。
So, clearly, mass is conserved, not mole Numbers.
显然是质量守恒，而不是摩尔数守恒。
To mitigate it, natural forests must be conserved.
为减小其影响，天然森林就必须得到保护。
Again, we have to assume that momentum is conserved.
我们要再一次假定，动量是守恒的。
It is not conserved about any other point, but that's okay.
它不再其他任何点，守恒，但是没有问题。
We only used the concept of mechanical energy, which is conserved.
仅仅利用机械能概念，它是守恒的。
Momentum is conserved, and that's called the conservation of momentum.
动量守恒，这就叫作动量守恒。
Mechanical energy is conserved, because gravity is a conservative force.
机械能是守恒的，因为重力是守恒力。
It's just the system as a whole for which the momentum is then conserved.
系统作为一个整体，动量是守恒的。
But momentum is conserved, because those frictional forces are all internal.
但是动量守恒，因为这里的，摩擦力都是内部的。
And mechanical energy is only conserved if the force is a conservative force.
机械能只有在，力是恒定时才恒定。
Angular momentum is conserved about this point Q, but only about that point Q.
角动量，在点Q守恒，也只有在点Q守恒。
By using fewer sodium channels, the signal gets dimmed and energy is conserved.
减少钠离子通道可减弱信号，从而节约能量。
Conserved Energy - fewer belongings means we have fewer possessions to worry about.
节省精力——所有物越少意味着我们担心的东西就越少。
We can't use a conserved region of the influenza virus to protect against HIV or hepatitis C.
我们不能用流感病毒的保守部分来预防艾滋病和肝炎。
That momentum must be in the wall — it's nonnegotiable, because momentum must be conserved.
那么墙壁也定有动量-，这是毫无疑问的，因为动量是守恒的。
FOXO3A is involved in several signalling pathways that are conserved across animal species.
FOXO3A涉及普遍存在于动物物种中的几条信号传递路径。
We would only provide the conserved stalk-or the conserved portion-of the virus's hemagglutinin.
我们只需要提供病毒的血凝素中的保守柄——也就是不变的那部分。
As a consequence, we cannot turn the statement "energy is conserved" into an absolute statement.
因此，我们不能把语句“能量是守恒的”做为一个绝对的陈述。
A similar approach to those two viruses is always possible if one can identify the conserved regions.
对付这两种病毒也有可能有类似的解决方法，只要有人能够识别出他们的保守部分。
A similar approach to those two viruses is always possible if one can identify the conserved regions.
对付这两种病毒也有可能有类似的解决方法，只要有人能够识别出他们的保守部分。
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