green and red lights stop flashing是什么意思

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• green and red lights stop flashing是什么意思
• 英语翻译On most modern railways,detection of the train’s position on the line and signal changing are done automatically and colored-light signals have largely taken the place of mechanical ones.The light signals usually mean:Green:proceed at line speed.Yellow:warning-the next signal is at red.RRailway signaling differs from the traffic lights used on roads in that trains cannot stop quickly; for example,a train traveling at 160 km/h (100 mile/h) would ne
• hazard lights flashing的意思?The bomb was discovered in a dark green Nissan Pathfinder parked on 45th street and Broadway with its engine running and hazard lights flashing.请问这里hazard lights flashing是什么意思?有害灯光闪烁?
• 英语初二阅读理解 This is a street crossing .There are red and green lights at each corner .Drivers must watch the lights carefully .When there is a green light ,the cars may go on .When there is a red light ,the cars must stop .They must wait until the red light changes（变）to green .Then they can go on .Sometimes the cars want to make a right turn or a left turn .They can make a right turn when the light is green or red .But they must wait until the green ligh
• 强者来翻译,看看你水平（勿用网络翻译工具等）On most modern railways, detection of the train’s position on the line and signal changing are done automatically and colored-light signals have largely taken the place of mechanical ones. The light signals usually mean: Green: proceed at line speed. Yellow: warning-the next signal is at red. RRailway signaling differs from the traffic lights used on roads in that trains cannot stop quickly; for example, a train traveling at 160
• green and red lights stop flashing是什么意思
• They must wait until the red light changes to green 是什么意思
• the red pencil shorter than green pencil是什么意思
• 用can,must,musn't,have to,has to填空Do you understand all these road-sighs?Look at the traffic lights.They are red.You _________ stop your car.Now,they are green,you ________ move on.There is a sign with "NO PARKING".You _________ leave your car there.You ________ park your car in the right place.A driver __________ learn traffic rules well.He ________ get a driver's license.
• Slow down and stop at the yellow lighSlow down and stop at the yellow light.Stop and wait at the red light.Go at the green light.求意思啊,求句子意思啊.
• 计算:(1) 1/(√2）-1/（√3）-1/（√2-√3） （2） 如果a=4+√3,b=13/（4+√3）
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