现在，正如你们从铀 238 幻灯片中想起的，我想下一张幻灯片会展示它。

Now, as you recall from the uranium 238 slide, I think the next slide will show it.

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量子点由磷化铟半导体构成，将它们喷涂在一张透明塑料片上，然后用另一张塑料片进行覆盖，最后将它们进行整体加热封装。

The dots, composed of a semiconductor called indium phosphide, are sprayed onto a transparent plastic sheet that is then covered with a second sheet. That done, the whole thing is heat-sealed.

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医生让他先拍一张X光片。

The doctor asked him to take an X-ray first.

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