一项新的研究表明，即使是在决定使用哪只手按下按钮的问题上，大脑也几乎总有一个备用方案。

The brain almost always has a plan B, even when deciding which hand to use to press a button, a new study finds.

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2005年，杜克大学工程系研究生同时也是一位极具热情的吉他手，莱尔斯，用胶合板、两个螺旋、一个滑板轴承和一些备用吉他部件制作了他的第一个调音器。

In 2005, Lyles, a Duke University engineering graduate and an avid guitarist, built his first tuner out of plywood, two screws, a skateboard bearing and some spare guitar parts.

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请让技师们尽量补救，我会看看有没有人可以找出备用零件或是二手的机器。

Please have the mechanics do what they can and I'll see if anyone can locate some spare parts or second hand machinery.

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