semaphore
noun [ U ] uk/ˈsem.ə.fɔːr/ us/ˈsem.ə.fɔːr/
旗语
a system of communication using two flags held in your hands that are moved into different positions to represent different letters, numbers, or symbols
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。