flaggy：多扁石的

flaggy 多菖蒲的 | flaggy 多扁石的 | flagman 平交道看守

flagitious：極惡的/殘忍的/兇惡的

flaggy /多扁石的/多菖蒲的/ | flagitious /極惡的/殘忍的/兇惡的/ | flagman /旗手/信號旗手/平交道看守/

gate keeper：平交道看守柵工

閘門槽,拉門溝 Gate groove | 平交道看守柵工 Gate keeper | 閘門板 Gate sheet

unaccompanied luggage：非隨身攜帶行李

10875 umbrella shed 傘形貨棚;有棚站臺[美] | 10876 unaccompanied luggage 非隨身攜帶行李 | 10877 unattended crossing 無人看守平交道

unguarded crossing：無人看守平交道

10976 ungated road crossing 無欄木道口 | 10977 unguarded crossing 無人看守平交道 | 10978 uni-directional line 單向運行線路

Unattended crossing, Unguarded crossing：無人看守之平交道

10877 unattended crossing 無人看守平交道 | 10878 Unattended crossing, Unguarded crossing 無人看守之平交道 | 10879 unattended halt 無人管理聯(lián)軌點