短語(yǔ)詞組用作名詞 (n.)動(dòng)詞+～catch the signal 見(jiàn)到那信號(hào)give 〔ignore〕 a signal 給〔忽視〕信號(hào)produce signals 產(chǎn)生信號(hào)put up 〔send〕 a signal 發(fā)信號(hào)receive signals 接收信號(hào)repeat 〔respond to〕 a signal 重復(fù)〔回答〕信號(hào)show a signal 顯示信號(hào)形容詞+～audible 〔clear〕 signal 聽(tīng)得見(jiàn)〔清楚〕的信號(hào)auditory 〔calling, visual〕 signal 聲音〔呼叫,視覺(jué)〕信號(hào)unmistakable 〔weak〕 signal 明確無(wú)誤〔微弱〕的信號(hào)名詞+～alarm 〔caution, danger〕 signal 警報(bào)〔警戒,危險(xiǎn)〕信號(hào)color light signals 彩色燈信號(hào)fire 〔fog, storm〕 signal 火災(zāi)〔起霧,暴風(fēng)雨〕信號(hào)home 〔railroad〕 signal 進(jìn)站〔鐵路〕信號(hào)input 〔output〕 signals 輸入〔輸出〕信號(hào)picture signals 圖像信號(hào)radar signal 雷達(dá)脈沖traffic signal 〈美〉交通信號(hào)～+名詞signal generator 〔lamp, pistol〕 信號(hào)發(fā)生器〔燈,槍〕介詞+～at a signal 在信號(hào)發(fā)出時(shí)begin at a signal 在信號(hào)發(fā)出時(shí)開(kāi)始ask by signal 用信號(hào)發(fā)問(wèn)on a signal 在信號(hào)發(fā)出時(shí)～+介詞signal by sounding a bell 以鈴聲為信號(hào)signal for a retreat 撤退信號(hào)signal from 發(fā)自…的信號(hào)signal in code 編碼信號(hào)signal of danger 危險(xiǎn)的信號(hào)signal to 發(fā)往…的信號(hào)用作動(dòng)詞 (v.)signal position 示意位置～+副詞signal wildly 亂發(fā)信號(hào)signal out a distress signal 發(fā)出遇難信號(hào)signal for 為(某事)而發(fā)信號(hào)signal for help 發(fā)信號(hào)求救signal with flags 用旗子當(dāng)信號(hào)短語(yǔ) 返回 signals