He has prepared a special core sand and solved the problem of cleaning blind holes successfully.

配制了专用芯砂，成功地解决了异型盲孔的清砂问题。

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So the last one day, I must walk into the blind man school, in the blind man school, I will round to sit together with those blind mans, sitting side by side to talk the core.

所以最后一天，我一定要走进盲人学校，在盲人学校里，我会和那些盲人围坐在一起，促膝谈心。

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The core idea, Westergren says, was to create a form of recommendation entirely blind to popularity, and focused instead on the sound of the music itself.

FORBES: CES: Pandora Is Everywhere