针的振动通过扬声器得到放大，现在他拥有了一架电吉他。

The needle's vibrations were amplified by the radio, and now he had an electric guitar.

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但是应该给紧张的飞行员打一剂强心针，让他们树立起信心，因为发生事故最坏的结果不过是一架受损的飞机和少数轻微受伤的乘客。

But even nervous flyers should be heartened that the outcome was a badly broken plane but just a handful of minor injuries.

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为便于与滚针轴承的滚针和保持架组件或外圈组件结合，内圈在滚道两侧有引入槽。

To facilitate their combination with needle roller and cage assemblies or the outer ring assembly of needle roller bearings, they have a lead-in at each side of the raceway.

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