call sign
noun /ˈkɔːl saɪn/
/ˈkɔːl saɪn/
- the letters and numbers used in radio communication to identify the person who is sending a message
单词 | call sign |
释义 | call signnoun /ˈkɔːl saɪn/ /ˈkɔːl saɪn/
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