1. 鬼火：femur 股 | fen fire 鬼火 | fen runners 滑冰靴的一种
2. 沼泽磷火：FEMSS Facility Engineering Management Support System ==> 辅助支持工程管理系统 | fen fire ==> 沼泽磷火 | fen soil ==> 沼地土