翻译以下短语并完成句子。 1. a danger/warning signal ____ 2. traffic signal ____ 3. a stop signal ____ 4. signal ( to) sb. to do sth.___ 5. signal to sb. ____ 6. signal that___ 7. She___ him to follow .她示意他跟她走. 8. He ____ that it was time to leave. 他示意该走了. 9. Rapid breathing is a ____ and you should call your doctor. 呼吸急促是个危险的信号,该去请你的医生了. |