Those who have a taste of dark are drawn into its vortex and rarely return. Perhaps it appeals to something deep within the human soul.
那些初尝黑暗的人们都被引入其漩涡而且很少归来。可能它呼唤着深藏在人类灵魂里面的某种东西。
Around the dark core of an optical vortex, the energy flow carried by the light beam is like a spiral staircase, flowing in a clockwise or counterclockwise direction.
绕着光涡旋的黑暗中心，光束携带的能量流就像螺旋梯，沿着顺时针或者逆时针方向流动。
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