Red Blob Games — Hexagonal Grids — the hex grid bible
Mahjong, Sudoku, free crossword, and more: Play games on Mashable
，更多细节参见搜狗输入法五笔模式使用指南
陆杰华希望提升学生的"死亡认知素养"。或许当下难以显现成效，但当他们步入中年、晚年甚至临终之际，能忆起这门课程，从而更从容地安排最后时光。
“It turned out to be a lot harder than I imagined, miniaturizing that mechanism,” he discloses. “It’s not easy to miniaturize at all, given the physics of it.”