交通灯已由红变绿。
中央计算机控制交通灯，现在让学生们先走。
The central computer controls the traffic lights, now let the students go first.
谁发明了交通灯？
1920年，世界上第一个三色交通灯投入使用。
In 1920, the world's first three-color traffic light was put to use.
幸运的是她要过马路的时候交通灯转绿灯了，所以她成功了。
Luckily the traffic lights turned green as she was to cross the road, so she made it.
如果你边走边看手机，你可能看不到车辆开过来或交通灯变红。
If you are looking at your phone while walking, you might not see a car come or traffic lights turn red.
比如，为什么不在交通灯杆上安装监控摄像机来防止人们闯红灯呢？
Like if people jump the traffic lights, I don't know why there isn't a camera at the traffic lights to stop people from doing that.
例如，我不知道为什么不在交通灯杆上安装监控摄像机来防止人们闯红灯呢？
Like if people jump the traffic lights, I don't know why there isn't a camera of the traffic lights to stop people doing that.
事实上，如果他们完全能看到交通灯的话，他们会把它们看作是路边的一种装饰。
If, in fact, they see traffic lights at all, they regard them as a kind of roadside decoration.
交通灯附近的区域也同样比它们中间的区域温度更高，这是由于车辆停在车流中所造成的影响，而不是移动造成的。
Areas near traffic lights can be similarly warmer than the areas between them because of the effect of cars standing in traffic instead of moving.
德克萨斯农工大学交通研究所的研究工程师凯文·鲍克说，虽然智能交通灯对一些城市特别有帮助，但有些城市太拥挤了，只有大幅减少道路上的汽车数量才能有效改变拥堵的局面。
Kevin Balke, a research engineer at the Texas A&M University Transportation Institute, says that while smart lights can be particularly beneficial for some cities, others are so jammed that only a sharp reduction in the number of cars on the road will make a meaningful difference.
新（交通灯）系统预计可用十年。
红色广泛用于指示危险(高压电警示、交通灯)。
Red is widely used to indicate danger (high voltage signs, traffic lights).
用它们作泛光灯或者交通灯其实更合适。
新型LED灯较现有的交通灯寿命成长，节能90%。
The new LED lamps have a significantly longer life and use up to 90 percent less energy than the existing lamps do.
在阿姆斯特丹的部分地区的交通灯甚至是比照自行车的速度设定的。
Traffic lights in parts of Amsterdam are even synchronized to bike speed.
交通灯虽然拥有良好的可用性，但是单独使用一个并不是人性化的体现。
A traffic light has good usability — but using one isn't really much of an experience.
该系统已经在马萨诸塞州剑桥测试过，那里的交通灯是由一套固定模式。
The system was tested in Cambridge, Massachusetts, where traffic lights are on a set pattern.
交通灯可以用来提醒司机转向或者为等候的车辆播放最新的车辆阻塞状况。
Traffic lights could alert cars when they are about to change, or broadcast the latest congestion update to waiting vehicles.
它控制交通灯，确保获得进出体育场馆的人群安全，为我们的眼镜镜片设计。
It controls traffic lights, gets crowds safely into and out of sports stadiums, designs the lenses in our spectacles.
伊利诺伊州法律要求葬礼车队的领头车应遵守所有的交通灯和信号牌。
Illinois law requires the lead vehicle in a procession to obey all stop signs and traffic signals.
造成了铜矿停工，交通灯实效和圣地亚哥星期六晚上的狂欢者只能在黑暗中跳舞。
Copper mines shut down, traffic lights failed and Saturday night revellers in Santiago found themselves dancing in the dark.
如果当你在下字路口内时红色交通灯亮起，在保证的前题下完成转弯。
If the light turns red when you are in the intersection, complete your turn when it is safe.
有时候，葬礼车队的司机们会根据指示牌或交通灯停下来，其实他们不必这样做。
Sometimes, drivers in a funeral procession will stop for a traffic light or stop sign, and they're not supposed to.
如果前面的交通灯是红的，就会告诉司机一个最佳车速以避免停车和挂空挡。
If the light ahead is red, the driver is told the optimal speed to avoid stopping and idling.
我本来想看看，但交通灯变成了绿灯，身后的喇叭响成一片，我只好驶开了。
I was ready to have a look, but the light changed, horns honked and I drove away.
他驾车经过了很多个交通灯，当时他还感到奇怪为什么那些车对他使劲按喇叭。
He's driven past a bunch of them, wondering why the other cars honk so.
她选择提前减速，同时注意到街边一家食品店前的绿色交通灯和在那里的新的灯。
She spots a slowdown ahead, and also notices on a side street the telltale green in the foreview of a food shop, and a new one at that.
穆萨车前方的交通灯变绿，又变红，再变绿，车却丝毫未动，引擎还在隆隆作响。
The stoplight in front of the Musas' car turned green, then red, and then green again, but the car remained in place, the engine still rumbling.
在打交通灯时，那辆车就停在她的车旁边，她可以看到车内有人哭叫求助，磕碰在车后窗上。
It had pulled up alongside her car at a traffic light, and she could see someone crying out for help and banging on the back window.
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