| 词组 | SOS |
| 释义 | 1． 作“紧急呼救信号”解时是可数名词: An SOS is a signal which indi- cates to other people that you are in danger and need help quickly. He didn't have time to send out an SOS． 2． 常修饰其他名词: A team of salvagers got an SOS signal from a station that's been missing for thirty years. They sent SOS messages to the base. |
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