| 词汇 | SOS |
| 词根词缀 | 词源： 1910, from International Morse code letters, chosen arbitrarily as being easy to transmit and difficult to mistake. Not an acronym for "save our ship" or anything else. Won out over alternative suggestion C.Q.D., which is said to mean "come quickly, distress," or "CQ," general call for alerting other ships that a message follows, and "D" for danger. SOS is the telegraphic distress signal only; the oral equivalent is mayday. |
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