Sea urchin spines show exceptional mechanoelectrical sensing from gradient structures and can be replicated in 3D-printed mimics for underwater sensing.
精准帮扶，最终的落脚点在人。习近平总书记叮嘱：“脱贫致富终究要靠贫困群众用自己的辛勤劳动来实现。”
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Transport for West Midlands unveiled a specially-designed Metro tram