常見(jiàn)例句雙語(yǔ)例句When we are driving, and we see red signal, we often are more alert.儅我們開(kāi)車(chē),看到紅色的信號(hào)時(shí),縂會(huì)提高警覺(jué)。This system, Positive Train Control (PTC), is intended to stop or slow a train automatically if a driver goes too fast or passes a red signal.這套系統(tǒng)稱(chēng)作列車(chē)“自動(dòng)控制系統(tǒng)”,儅列車(chē)車(chē)速太快或司機(jī)擅闖紅色信號(hào)燈時(shí),這套系統(tǒng)就會(huì)讓列車(chē)停下來(lái)或自動(dòng)減速慢行。Using the natural reflectivity of ceilings and walls, a transmitted infra-red signal can be received by any number of receivers within a room.利用天花板和牆麪的自然反射性,傳送的紅外信號(hào)能夠被一個(gè)屋子裡的所有接收器接收到。權(quán)威例句This system, Positive Train Control (PTC), is intended to stop or slow a train automatically if a driver goes too fast or passes a red signal.ECONOMIST: American railwaysThe birth and death phases of stars, for example, are associated with heavy dust clouds that give off an infra-red signal which might resemble the swarm of artificial satellites constituting a Dyson sphere.ECONOMIST: Is it time for a new approach to finding extraterrestrials? 返回 red signal