At that point there was a light knock on the door.

就在这时，有人轻轻地敲门。

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Although I'm blind, I carry the lantern, not only light for others, but let others see me, so they won't knock me.

虽然我是盲人，但我提着灯笼，不仅是为别人照亮，而且让别人看到我，这样他们就不会撞到我了。

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If these officials saw the light of oil lamps in someone's home and heard the sound of reading, they would knock on the door and say, "The mayor adds oil for your lamp!"

如果这些官员看到有人家里的油灯亮着，而且听到读书的声音，他们就会敲门说：“市长给你的灯加了油！”

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Kelleher calls him a "bottom-up thinker, " which for Kelleher is almost a light knock.

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Sandwiching the solar cells inside the device would block some light out and knock down power conversion efficiency even further, Filler cautioned.

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Neutrons ejected from a watery surface move much more slowly than those from a rocky one, because the hydrogen nuclei in water are light enough for an exiting neutron to knock around much like one billiard ball hitting another a process that slows the neutron down.

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