开普勒在观察TrES - 2b和它的恒星时，只发现了很轻微的光线明暗变化，不过足以确定一颗跟木星体积相当的巨大气体球就是原因所在。
Watching TrES-2b and its star, Kepler detected only the slightest such dimming and brightening, though enough to ascertain that a Jupiter-size gas giant was the cause.
原因很简单，就是为了更快速地确定问题所在。
我们需要确定这次反应功亏一篑的原因所在。
We need to pinpoint the reasons why the response fell short.
我们需要确定这次反应功亏一篑的原因所在。
We need to pinpoint the reasons why the response fell short.
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