Each Lego brick must have that perfect grasp, strong enough to hold onto another brick but easy enough for a child to pull apart.

每一块乐高积木都必须有完美的抓力，既要足够牢固可以抓牢另一块积木，又要足够容易，让孩子们可以把它拉开。

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That's exactly what Nathan Sawaya did, but he managed to build himself another career brick by brick and now he sells his LEGO masterpieces for thousands of dollars.

这正是内森·萨瓦亚所做的，但他一砖一瓦成功地为自己创立了另一番事业，现在他所制作的乐高杰作售价高达几千美元。

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Fisher Price, Mattel's preschool brand, launched bricks called TRIO, which boast of a "unique click-and-snap" technology but look a lot like Lego.

美泰公司针对学龄前儿童的品牌费雪也推出了“TRIO”系列品牌的积木，标榜为有着“独特的click - and - snap”技术，但看起来很像乐高。

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But Lego Builder involves real world physics.

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But perhaps Lego should not strive unduly to keep up with electronic fashion: the big hit this Christmas at Hamleys, London's toy mecca, was a come-back story dating back to ancient Greece: the humble yo-yo.

ECONOMIST: Lego

Not only would succeeding mean diluting the Lego brand beyond recognition, but the closer Lego got to its goal the more competition it would face from the likes of Disney and Hasbro.

FORBES: Primary colors