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Yes. In fact, there is not enough energy in a single photon to go ahead and eject an electron from this zinc surface.
是的，事实上，这里的光子没有足够的能量,去从锌表面逐出一个电子。
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because when you're up on that point, you see anything that's in the water, anything close to the surface and,
因为当你站在那里的高处，你能看到贴近水面的一切，而且，
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And the figure of the poetic rewards for chastity continues to surface throughout Milton's early works.
同时，因为操守贞洁而受到诗意赞美的人,贯穿了弥尔顿的早期作品。
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There are proteins, for example, on the surface of some cells that bind insulin and respond to the presence of insulin.
比如说蛋白,有些细胞表面上的蛋白,捕获胰岛素并且对胰岛素进行应答
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I don't believe we'll-- I'll--come close to scratching the surface of what I would enjoy doing, by the time I've died.
我不能相信-,我能推测死时,自己会对什么感兴趣。
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All right. So please raise your hand now if you think there'll be sufficient energy to eject electrons from the metal surface?
好的，如果你们认为,有足够的能量从金属表面,射出电子请举手？
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When you're falling to the surface of the Earth, you are describing a problem of constant acceleration.
当你讨论下落问题时,你在描述一个加速度恒定的问题
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So we need to get embryonic stem cells to form surface cells.
那么，我们就应该从表层细胞中提取胚胎干细胞。
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The reason you have to get it out of your head is you need to be able to see it on a surface that is not in your mind.
这么做的原因是,你需要,客观地观察它,而不是看它在你大脑中的样子。
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is very close to its surface a kind of anal-phase parable.
和那种肛门期的寓言很像。
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The Prince appears, on its surface, to be a most conventional work.
君王论》表面上展现出，是一本最拘于常规的书籍。
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All we're going to do here is really just, once again, scratch the surface.
我们在这里只是，肤浅地解析一下。
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So, for example, we were talking about a threshold frequency as in a minimum frequency of light that you need in order to eject an electron from a metal surface.
举个例子来说，我们谈论的临界频率是,光从金属表面逐出一个电子,所需的最小频率。
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Then, your muscle cells would start producing Hepatitis B surface antigen and your immune system recognizing that's a foreign protein would start responding to it.
于是,肌肉细胞将会,开始制造乙肝表面抗原,然后免疫系统就会识别出,那是外来蛋白质并且产生免疫应答
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This is a new concept, receptors don't have to be these molecules on cell surface, there can be receptors that exist in other places within the cell.
这是一个新概念,受体分子不一定只存在于细胞表面,它们也可以存在于细胞内其它地方
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So, it doesn't need to bind to a receptor on the surface of the cell in order to work because the molecule can actually enter the cell directly.
所以无需与细胞表面受体相结合来起效,因为这些分子能直接进入细胞
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