They also abandoned using any corrective lenses, firing the X-ray pulse through a pinhole and then collecting the diffracted rays after they pass through the sample.

他们也放弃使用任何矫正透镜，而是通过一个针孔发射X光射线，然后采集经过样品后的衍射光线。

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"You can see it for yourself, " Weaver moaned to a reporter, staring Friday at all the vacant lots, overrun with weeds that are taller than he is, at all the abandoned shells of former homes, many of them still marked with the spray-painted "X" that became the grim symbol of a great American city nearly wiped off the map.

NPR: New Orleans: A Tale Of 2 Cities Since Katrina