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日本利用壓電磁磚，將足跡化為電能。此瓷磚捕足步之動能。行走時，重力與動作施壓於磚，磚微彎，生機械應力。磚中壓電材以此應力轉電能。每步生微電荷，百萬步合，足以驅LED燈、數位顯示及感測器。於澀谷車站等繁地，日約有二百四十萬步貢此系統。電能可儲或即用，減傳統電
| Rank | Name | Level | Trophies | Role | Donation | Donation received | Last seen |
|---|---|---|---|---|---|---|---|
| 1 | wcnmfu #VQG9VYUG2 | 65 | 12604 | coLeader | 0 | 0 | 3 hours ago |
| 2 | 022 #VULYR8YGV | 64 | 12530 | coLeader | 0 | 0 | 7 days ago |
| 3 | isaac #PGY8UC0QR | 58 | 11667 | coLeader | 0 | 0 | 2 days ago |
| 4 | paco #20P0U8UQRL | 45 | 9064 | coLeader | 0 | 0 | 2 hours ago |
| 5 | 朱自清 #20YGVC9GL9 | 29 | 5295 | coLeader | 0 | 0 | 24 days ago |
| 6 | TinpotPortal #20J2RQ9GLR | 32 | 5081 | coLeader | 0 | 0 | 21 hours ago |
| 7 | 67 #VJR2Q8JQY | 23 | 3595 | coLeader | 0 | 0 | 3 hours ago |
| 8 | 羅傑•底迪 #VGCG8R9LJ | 24 | 3440 | leader | 0 | 0 | 18 days ago |
| 9 | jaydengng #VQJCQGVL0 | 23 | 2475 | coLeader | 0 | 0 | 9 hours ago |
| Rank | Name | Level | Trophies | Role | Donation | Donation received | Last seen |
