red light

英 [ˌred ˈlaɪt]

美 [ˌred ˈlaɪt]

n. 红灯(示意车辆停下的信号)

Collins.1

牛津词典

noun

红灯（示意车辆停下的信号）
a signal telling the driver of a vehicle to stop
1. to go through a red light (= not stop at one)
  闯红灯

（交通信号中的）红灯
Ared lightis a traffic signal which shines red to indicate that drivers must stop.
红灯区的
Thered-lightdistrict of a city is the area where prostitutes work.

noun

We had a red light on doing business with him.
我们对跟他做生意亮了红灯。
The absorption of infrared and red light by the pulsatile component is measured differentially.
被搏动成份吸收的红光和红外光分别进行测量。
Mind the traffic. there's the red light.
注意交通，红灯亮了。
I was led to a small room bathed in soft red light
我被带到了一间笼罩在柔和红光中的小屋里。
He says there is a lot of blue in white light. This explains why the blue light and white light hamsters appear to be more depressed than the hamsters seeing red light or darkness.
他说，白光中含有很多蓝色的光，这很好地解释了为什么蓝光和白光下的仓鼠比红光或黑暗中的仓鼠更为抑郁。
The absorption isn't very strong so that this is no accentuated reflection of red light at the surface.
吸收并不是很强，因此在表面上没有红光的强烈反射。
We were staying in a seedy hotel close to the red light district
我们当时住在紧挨着红灯区的一家脏乱不堪的旅馆里。
You would think that if a train jumped a red light that the brakes would automatically be applied.
你就想是火车跳过了红灯，然后自动刹车了。
The plates are insensitive to red light. His hearing was dulled by age.
这些干片均对红光感觉迟钝。他的听觉因上了年纪而变得迟钝了。
When the red light is on, you must not go.
红灯亮时，你不能走。