Quantum tunneling is an effect where a particle can pass through a barrier it would not normally have the energy to overcome.

量子隧穿效应是指粒子能够穿过正常来说它的能量不足以通过的障碍。

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This leaves one last technical barrier: latency, or the effect a player's physical location has on game play.

最后一个技术障碍是延迟，也就是玩家的物理位置对游戏效果的影响。

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At first, with no barrier to entry, enrolment climbed, but in 1976 the city of New York, which was then in effect bankrupt, forced CUNY to impose tuition fees.

一开始，由于没有入学限制，报名上学的人数不断攀升，但到了1976年，实际上已经陷入破产困境的纽约市，逼迫城市大学征收学费。

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The method LG uses to accomplish this effect is called "switchable barrier, " which is similar to how Nintendo's 3DS can do 3-D without requiring the player to wear glasses.

CNN: LG unveils world's first 3-D smartphone

The effect has been to remove the barrier to shareholder suits, according to Paul Sheard, a strategist at Baring Asset Management.

ECONOMIST: Spare a thought for shareholders