If you had a motor here that was causing a paddle to move up and down you could cause waves to form at one end of the tank and move from left to right.

如果这里有一个马达，使桨上下移动，就可以在水槽的一端形成波浪，从左到右扩散。

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Every year, over 8 million tons of plastic end up in our oceans, and it can take up to 500 years to break down.

每年，有超过800万吨的塑料最终进入海洋，它们需要500年的时间才能分解。

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"We can hardly help mapping them onto a vertical, spatial schema, with the good end 'up' and the bad end 'down'," says Casasanto.

他说“我们不由自主地他们建立在一个纵向的空间架构中：好的结果是上，坏的结果是下。”

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But because there's this lone pair here, it's pushing down on the other bonds, 5° so we end up with an angle of less than 109 . 5 degrees.

但因为这里有孤对，它会把其它键向下压，所以键角会小于109。

麻省理工公开课 - 化学原理课程节选

And if you had a motor here that was causing a paddle to move up and down you could cause waves to form at one end of the tank and move from left to right.

如果在水槽里放个发动器,来让水上下起伏,波浪形成于,水槽的一端,然后从左向右扩散。

麻省理工公开课 - 固态化学导论课程节选

So instead, these would be canceling out wave functions between the two, so we would end up with a nodal plane down the center.

相反，两者之间的,波函数会相互抵消，所以我们在中间会得到一个节面。

麻省理工公开课 - 化学原理课程节选

But each of these incremental steps can end up breaking down trust between the parties.

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In practice most affluent folks will end up spending down assets, including possibly exempt ones, during a five-year repayment plan.

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Exclusive carrier contracts and devices are frustrating for consumers who want real choices and end up locked down for years with a carrier.

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