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An open system, as the name describes, allows mass and energy to freely flow through the boundary.
开系，顾名思义，允许质量和能量自由地,流过它的边界。
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You see, the quantum condition, by putting quantization into the moangular mentum it is propagated through the entire system. Orbit dimensions are quantized.
你们看，量子条件，通过把,角动量量子化，它就能在这个系统中进行传播,同时轨道大小也被量子化。
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system is the opposite of the open system, no mass and no energy can flow through the boundary.
孤立系与开系正相反，没有质量或能量,能流过它的边界。
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Chapters 11 through 15 cover the dietary system, the dietary laws as well as the ritual purity laws.
1到15章节讲了饮食系统，饮食教规和宗教仪式的纯度法律。
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You can see how things are feeding through the system: it starts out in one thing, it goes to the insurance companies, and then it goes to the municipal governments.
你能看到事件是如何在系统里相互影响的,它开始于一件事,它涉及到了保险公司,然后又传递到地方政府
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Endocrine are signals that get carried through the blood system.
内分泌系统的信号通过血液来传递
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Air traffic used to be everything flew to places local to it but now there's a system of hubs, Chicago O'Hare for instance or Newark where planes fly through.
以前的飞机都是飞往它的所属地,但现在的航空运输是一个由交通枢纽组成的系统，例如飞机会途经芝加哥O'Hare机场或Newark机场。
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It's insulated. It's a closed system. In fact, it's an isolated system. There's no energy or matter that can go through that boundary.
系统指的，是盒子里的东西,它是封闭孤立的。
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And, Aristotle gave us this system, which persisted almost through the Middle Ages. And, Aristotle gave us this, and I'll leave you with this.
他带给我们这个系统，一直统领着我们,直到中世纪，亚里士多德给了我们这个，你们自己看吧。
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The closed system allows energy to transfer through the boundary but not mass.
闭系允许能量通过它的边界传递,但质量不行。
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You have in chapters 1 through 7 the sacrificial system.
到7章节讲的是献祭系统。
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Depending on what you call external and internal environment, this path that I'm tracing here, deep within your digestive system, is really directly connected to the outside world through both ends.
基于你们所谓的外环境和内环境,我在这里我所指的消化系统内部通路,它的两端确实与外界环境直接相通
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But, they did it through the postal system.
但他们通过邮政系统取得了成功。
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