The invisible group wasn't far behind the high-risk set, with more than 13% of them exhibiting depression.

隐形风险人群也与高危人群相差无几，他们中有13%的人表现出抑郁症状。

youdao

Because their behaviors are not usually seen as a red flag, these young people have been dubbed the "invisible risk" group by the study's authors.

因为这些年轻人的行为通常不被视为危险信号，因此该研究的作者们称他们为“隐形风险”群体。

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29%, the "invisible risk" group, scored high on three in particular: They spent five hours a day or more on electronic devices.

29%的“隐形风险”人群在三项测试中得分较高：他们每天花在电子设备上的时间超过5个小时。

youdao

But recently there's been an increase of retaliatory attacks by people on the other side, including a slightly mysterious group called the Invisible Commandos who've been operating against Gbagbo."

VOA: special.2011.04.02

The nonprofit group Invisible Children produced the "Kony 2012" half-hour documentary, which was viewed tens of millions times on YouTube.

CNN: STORY HIGHLIGHTS

And it's particularly ironic that the most viral YouTube video of all time was made by a non-profit group called "Invisible Children".

CNN: Opinion: After Kony, should kids decide our morals?

The group behind the video, Invisible Children, Inc.

FORBES: 12 Lessons from KONY 2012 from Social Media Power Users