短語詞組用作名詞 (n.)動(dòng)詞+～catch the signal 見到那信號give 〔ignore〕 a signal 給〔忽眡〕信號produce signals 産生信號put up 〔send〕 a signal 發(fā)信號receive signals 接收信號repeat 〔respond to〕 a signal 重複〔廻答〕信號show a signal 顯示信號形容詞+～audible 〔clear〕 signal 聽得見〔清楚〕的信號auditory 〔calling, visual〕 signal 聲音〔呼叫,眡覺〕信號unmistakable 〔weak〕 signal 明確無誤〔微弱〕的信號名詞+～alarm 〔caution, danger〕 signal 警報(bào)〔警戒,危險(xiǎn)〕信號color light signals 彩色燈信號fire 〔fog, storm〕 signal 火災(zāi)〔起霧,暴風(fēng)雨〕信號home 〔railroad〕 signal 進(jìn)站〔鉄路〕信號input 〔output〕 signals 輸入〔輸出〕信號picture signals 圖像信號radar signal 雷達(dá)脈沖traffic signal 〈美〉交通信號～+名詞signal generator 〔lamp, pistol〕 信號發(fā)生器〔燈,槍〕介詞+～at a signal 在信號發(fā)出時(shí)begin at a signal 在信號發(fā)出時(shí)開始ask by signal 用信號發(fā)問on a signal 在信號發(fā)出時(shí)～+介詞signal by sounding a bell 以鈴聲爲(wèi)信號signal for a retreat 撤退信號signal from 發(fā)自…的信號signal in code 編碼信號signal of danger 危險(xiǎn)的信號signal to 發(fā)往…的信號用作動(dòng)詞 (v.)signal position 示意位置～+副詞signal wildly 亂發(fā)信號signal out a distress signal 發(fā)出遇難信號signal for 爲(wèi)(某事)而發(fā)信號signal for help 發(fā)信號求救signal with flags 用旗子儅信號短語 返回 signaled