time.sleep(2 ** attempt) # 指数退避
Sea urchin spines show exceptional mechanoelectrical sensing from gradient structures and can be replicated in 3D-printed mimics for underwater sensing.
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第三十七条 爆炸性、毒害性、放射性、腐蚀性物质或者传染病病原体等危险物质被盗、被抢或者丢失，未按规定报告的，处五日以下拘留；故意隐瞒不报的，处五日以上十日以下拘留。
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