I pulled out my grade ten geometry book. “Another year done,” I said tossing it into the return book bin a few lockers down.”Two more to go.”
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With two more days of competition to go China is in an unbeatable position.
比赛进行到最后两天时,中国队已处于无敌手的地位。
It used to be three kilometres but most people wanted to do a bit more than that so we lengthened it to five kilometres—we now go round the lake twice and that adds an extra two kilometres.
以前是3公里,但大多数人想多逛一下,所以我们把路程延长到5公里——现在我们绕湖两圈,这就比以前增加了2公里。
You still have two more frameworks to go.
您还有另外两个框架需要学习。
Then next week we'll do more complicated problems that involve motion in higher dimensions, how to go to two dimensions or three dimensions.
下周我们将会处理更复杂的问题,包括更高维数的物体运动,如何处理二维以及三维运动
So let's listen to We've got two more cuts to do and then i'll let you go.
让我们再听,两个片段,然后下课
So we have two electrons in our bonding orbital, but because we use the same rules to fill up molecular orbitals as we do atomic orbitals, so the Pauli exclusion principle tells us we can't have more than two electrons per orbital, so we have to go up to our anti-bonding orbital here.
所以在成键轨道上有两个电子,但因为我们用了和原子轨道时,用的相同的规则,所以Pauli不相容原理告诉我们,一个轨道上不能有两个以上的电子,所以我们需要填充到反键轨道上去。
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