It’s looking for the faint dimming of a star that occurs when an orbiting planet passes in front of it.

当绕着恒星运行的行星在恒星前方经过时，会在恒星表面留下微弱的阴影。 开普勒正是寻找这样的阴影。

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Oliver: You’re looking for a Bronze Star like the one Cleo wore?

你们在找青铜星么，就像Cleo带的那种？

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By looking for changes in this pulsing of the star, Dr Silvotti deduced that a planet was orbiting it.

通过对该恒星脉冲调制的观察，西尔·沃蒂博士推断此恒星周围有一颗围绕其运转的行星。

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I mentioned to you in the website that this is not the big opportunity you've been looking for to be a star.

我在网上也跟你们提到过,这不是一个你期待已久的,成为大明星的机会

耶鲁公开课 - 基础物理课程节选

Several monster planets have been discovered by looking for the wobbles in a star's spectrum caused by a planet's to-and-fro tugging of its parent.

ECONOMIST: Twinkle, twinkle, giant planet

Rather than looking for the tiny Doppler shift of a bright star, in other words, Dr Cameron and his team were looking for the much larger Doppler shift of a much fainter planet.

ECONOMIST: Extrasolar planets

By measuring a star's position in the sky, then, and looking for periodic variations in that position, it ought to be possible to detect any orbiting planets, even small ones.

ECONOMIST: A roadmap for planet-hunting