| 词汇 | distress-signal |
| 释义 | distress signal noun[ C ] uk /dɪˈstres ˌsɪɡ.nəl/ us /dɪˈstres ˌsɪɡ.nəl/ a message from a boat, ship, plane, etc. to tell people that it is in great danger and therefore in urgent need of help: The term "mayday" is used as a distress signal by people who need help on a ship or an aircraft. The plane had sent a distress signal when the hijacking took place. See distressnoun signalnoun The radar picked up a distress signal from a non-military aircraft within ten miles of the base. A beacon on the stricken ship began to issue a distress signal that was picked up by a satellite. The wireless operator tapped out a distress signal. Signs, signals and symbols acid test backward slash backwards slash beacon breadcrumb hieroglyphically iconographic iconographically iconography lagging indicator obelus octothorpe paraph penalty flag pilcrow pointer prompt the all-clear token torch |
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