这些公司有一个共同点：它们没有在造更聪明的模型，它们在解决数据从混乱到有序的问题。
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That narrowed Lucy's possible address down further - but they didn't want to go door to door, making enquiries. Get the address wrong, and they could risk the suspect being tipped off that he was on the authorities' radar.
12月19日，北京口腔医院新建主院区，患者在院内接受治疗。本版图片/北京口腔医院供图