Humane Society president Wayne Pacelle says it isn't just the physical abuse of the chimpanzees that's troubling.

VOA: standard.2010.02.16

The problem of memory is just as important to the psychological dynamics of the fall of Adam and Eve, but as we will see when we look at Book Four, surely it's the problem of the poet's memory that's the most troubling in Paradise Lost.

记忆的问题的重要性与,亚当与夏娃堕落后心里的变化相当，但是我们将在第四册书看到，确实是诗人自己记忆的问题,困扰着《失乐园》这部作品。

耶鲁公开课 - 弥尔顿课程节选

It's troubling, but at some time maybe I'll try to explain it.

WSJ: Rutgers fires coach Mike Rice after video release

It's troubling, he says, because directors themselves say the best directors tend to be active or retired chief executives.

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It's also troubling because it is consistent with perhaps the most aggressive administration ever against reporters doing their jobs providing information that citizens need to know about our government.

WSJ: Gov't probe obtains wide swath of AP phone records