1
traffic light + turn/change + [color]
动词 turn 或 change 表示颜色变化。
The traffic light turned red.
交通灯变红了。
交通信号灯；红绿灯
先理解核心含义，再看它在真实句子里的用法。
交通信号灯；红绿灯
a signal device at a road junction or pedestrian crossing that tells drivers and walkers when it is safe to go, using red, amber/yellow, and green lights
The traffic light turned red.
交通灯变红了。
设置在道路交叉口或人行横道的信号装置,利用通用颜色代码指示驾驶、骑行或步行的安全时刻
A signalling device positioned at a road intersection or pedestrian crossing indicating the moment it is safe to drive, ride or walk, using a universal color code.
以交通灯的三色信号(绿、黄或琥珀、红)作比喻的颜色编码
A colour code using the three signals of a traffic light (green, yellow or amber, and red) as a metaphor.
用胶印或照相凹版印刷的邮票版边上的色点,用于印刷商检查颜色准确性
The colored dots on stamp sheet margins printed with offset printing or photogravure methods, used by the printers to check color accuracy.
在康威生命游戏中,四个闪烁体正交等距排列在中心点周围的图案
In Conway's Game of Life, an arrangement of four blinkers that are orthogonally equidistant from a central point.
When the traffic light turns red, you must stop the car.
当交通信号灯变红时，你必须停车。
The traffic lights at the crossing were not working this morning.
今天早上十字路口的红绿灯坏了。
Look at the traffic light before you cross the street.
过马路前先看红绿灯。
动词 turn 或 change 表示颜色变化。
The traffic light turned red.
交通灯变红了。
介词 at 表示位置。
Wait at the traffic light.
在交通灯前等候。
Always obey the traffic light.
务必遵守交通信号灯。
Not this
There is a traffic lamp at the corner.
Use this
There is a traffic light at the corner.
中文常直译'交通灯'为'traffic lamp'，但英语中标准说法是'traffic light'。
Not this
The street has many traffic light.
Use this
The street has many traffic lights.
交通信号灯是可数名词，复数形式应加's'。
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Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
Use traffic light naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.