- kachihara
- 步行: go on foot; walk
- 原: primary; original; former
- 步行: go on foot; walk◇步行锻炼法 deambulation; 步行机 pedipulator; walking machine; walkie-talkie; 步行困难 dysbasia; 步行恐怖 basiphobia; basophobia; 步行小道 footway; 步行者 footer; foot passenger
- 并行原因: concurrent causes
- 飞行原理: principles of flight
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