如果你观察其他恒星的光谱，你会发现它们的颜色是一样的。

If you were looking at the spectrum of some other star, the colors would be the same.

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他说：“如果你观察的时间足够长，你就能看到花蕾绽放。”

"If you watched long enough," he declared, "you could see buds unsheath themselves."

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如果你观察一下厄尔尼诺现象是如何影响环太平洋地区的所有国家，澳大利亚经常被认为是这方面的突出代表。

If you look at how El Nino affects all the nations around the Pacific Rim, Australia is often thought of prominently in that regard.

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He found a distribution. And, if you look more closely at the distribution, here is what he found.

他发现了分布，如果你仔细观察电荷分布的话，这就是他发现的。

麻省理工公开课 - 固态化学导论课程节选

If you take one of those individual grains of sodium chloride, look at it carefully, you will see the edges look like this.

如果你拿起,氯化钠晶体的一粒，仔细观察，你可以看到这样的棱角。

麻省理工公开课 - 固态化学导论课程节选

You can imagine that if a vector is viewed from an angle, then its components will vary with the perspective.

你可以想象一下,如果换一个角度观察矢量,其分量会相应地发生变化

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