troubling是什么意思？

The surge in world grain prices in 2007 and 2008—and the threat they pose to food security—has a different, more troubling quality than the increases of the past.

The unpredictability of the real world may bring to the surface a troubling software problem.

But this vote of confidence in Oprah sends a troubling message at precisely the time when American universities need to do more to advance the cause of reason.

But at a time when the American factory seems to be a shrinking presence, and when good manufacturing jobs have vanished, perhaps never to return, there is something deeply troubling about this dilution of American craftsmanship.

It is also troubling that voting rates among our youngest eligible voters—18- to 24-yearolds— are way down: little more than one in four now go to the polls, even in national elections, compared with almost twice that many when 18-year-olds were first giv

Terrie Moffitt of Duke University and her research colleagues found that kids with self-control issues tended to grow up to become adults with a far more troubling set of issues to deal with.

This is troubling as climbing Arctic temperatures combined with rapid sea ice loss are creating a new type of climate feedback loop, which could accelerate Arctic warming.