第三人称单数： underruns
过去式： underran
过去分词： underrun
现在分词： underrunning

The boat underrun the bridge .

船从桥下驶过。

Motor vehicles and trailers -- rear underrun protection requirements .

汽车和挂车后下部防护要求。

Motor vehicles and trailers -- lateral and rear underrun protection requirements .

汽车和挂车侧面及后下部防护要求。

We are supposed to figure out the reason of buffer underrun .

我们应该找出缓存欠载的原因。

A buffer underrun occurred and burning was unable to complete . Try burning again at a slower speed .

出现缓冲区不足错误，无法完成刻录。请重试以较低的速度刻录。