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

就在这时，有人轻轻地敲门。

youdao

youdao

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。

youdao

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

FORBES: On The Cover/Top Stories

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

FORBES: Magazine Article

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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