distress sign的相關資料：
臨近單詞
distress
distress radio call system
distress about the failure
distress communication net
distress of damage-feasant
distress signal warning device
distress-calling auto-sender
Distressed Airman Recovery Beacon
Distress Alerting and Locating System
distress urgency and safety communicatio
Distressful examination and ultimate quest
