我们应该达到这一点，没有孩子开始他们不能通过的课程。

We should get to a point where no kid starts a course they can't pass.

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光栅对光信号有一定的过滤作用，只允许一定波长的光通过，不能通过的光波将被反射回来。

The grating can filter signal and permit light with certain wavelength to pass through, and the signal will be reflected which can't go.

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这些传感器根据量子隧道效应的原理工作，即只要间隔的距离非常微小，电子就能穿过经典物理学认为不能通过的势垒。

The sensors rely on quantum tunnelling, in which electrons take journeys that would not be allowed by the laws of classical physics, as long as the distances involved are tiny.

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This machinery is so precise that a human hair couldn't even pass between the heads and spinning platters, yet it all works in terrific speeds.

这些设备是很紧密的以至于人的头发,都不能在头和旋转的磁盘之间通过，尽管如此，它的运行速度非常快。

哈佛公开课 - 计算机科学课程节选

Her aim is to get along in a world that is dominated by shifting forces that can be registered and reacted to by poetry, but not explained.

她的目的是通过诗歌所能记录，达到却不能解释的,变幻莫测的力量,来和被统治的世界相处。

耶鲁公开课 - 现代诗歌课程节选

So, if you're a small college with only $20 million in a portfolio you don't come across as a qualified purchaser.

因此,如果是一个,只有2000万资产组合的小学院,是不能通过合格购买者的审核程序的

耶鲁公开课 - 金融市场课程节选