關於「Distress signal」標籤，搜尋引擎有相關的訊息討論：

Pains Wessex - Marine Pyrotechnic Signal and Rescue ProductsThe world's leading pyrotechnic marine rescue signalling products - Marine flares, Hand flares, Distress Signals and Lifebuoy Markers.缺少字詞： gl= twDistress signals, flares and emergency beacons - Maritime Safety ...Dis