不过他也坦承，「训练之后仍有大量工作要做」。稳定性、成本、安全合规，一堆问题还没解决，离真正可用还有距离。
What are Moon phases?According to NASA, the Moon takes about 29.5 days to orbit the Earth. Over the course of this period, it moves through eight recognisable phases. While the same side of the Moon always faces us, the amount of its surface lit by the Sun changes as it continues along its path. The shifts in sunlight create the different appearances we see from Earth, ranging from a fully illuminated Moon to a thin sliver or near darkness. The eight phases are:
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"We don't know where they go, but they disappear for about 10 days, and then they'll come back again. And without the CCTV, we never knew that."
（三）以侮辱、诽谤或者其他方式侵害英雄烈士的姓名、肖像、名誉、荣誉，损害社会公共利益的；