单词 | visual signal造句 |
例句 | visual signal造句1、a visual signal to control the flow of traffic at intersections. 2、a visual signal to control the flow of traffic at intersections 3、Another visual signal produced by while-tailed deer is termed a buck scrape. 4、If a whistle is not available, use the visual signal alone. visual signal翻译【电】 视觉讯号 |
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