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Being wakened during a light phase means you are more likely to wake up cheerful and full of life and interest.

如果你是在轻睡时醒来，你会觉得很愉快，很有活力和很有好奇的意念。

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The optical fiber phase sensor is used to replaces traditional microphone, and the relationship between light phase and photoacoustic signal is discussed.

提出用光纤相位传感器代替传统的微音器检测光声信号，讨论了光纤中光波的相位变化与光声信号的关系。

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In contrast,a light bulb has much more impact in the use phase, where it's using the energy, and where you can reduce that with more efficient lighting technologies,"

VOA: standard.2009.03.30

They discovered that by shifting the "phase" of light so that the peaks of one wave line up with the valleys of an adjacent one, the two cancel each other, creating "shadows" between waves that are smaller than the waves themselves(see diagram, p. 141).

FORBES: Trick Of The Light

They discovered that, by shifting the "phase" of light so that the peaks of one wave line up with the valleys of an adjacent wave, the two waves cancel each other out, creating "shadows" between waves that are smaller than the waves themselves(see chart).

FORBES: Trick of the Light

As detailed in the recently released 2010 Sustainability Report, the company has taken on various eco-initiatives, including an aggressive (and early) phase-out of incandescent light bulbs, the installation of solar panels on numerous U.S. stores, and the introduction of the IKEA Product Sustainability Scorecard.

FORBES: Labor Trouble In 'Lack-land'