"The eyes light up and click. It happens -- 'I didn't know you had this.'" Jenny Johnson is the executive director of marketing for the Online Computer Library Center.

VOA: special.2011.07.11

Well, we can continue. On a light-up valentine it means "don't stop, go."

勇往直前吧“

耶鲁公开课 - 文学理论导论课程节选

Other bioluminescent proteins don't light up unless certain enzymes are present.

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No, this is a fancy backlit indicator, one that doesn't light up at all until you thumb the dedicated performance switch on the machine's right side.

ENGADGET: Samsung Series 7 Gamer review: the company's first gaming laptop makes its way to the US

It's based on his work using functional magnetic resonance imaging brain scans that first demonstrated that, when people are asked to imagine themselves in retirement, the parts of their brains that usually "light up" when they think about themselves don't light up at all.

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