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小视频 | 沿着边境看中国｜您有一份来自罗古箐的邀请函：入住木楞房，徒步秘境丹霞

小视频 | 哈尔滨工业大学和香港中文大学，研发了一款形似“毒液”的磁性黏液机器人，形态多变，能轻松穿越仅1.5毫米的细缝，为治疗脑血管堵塞等疾病带来新希望。相关成果发表于《先进功能材料》。新华每日电讯

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