Red, as well as yellow, road signs tell people to be careful in dangerous areas. 红色和黄色的路标都告诉人们在危险地区要小心。 And if you see a red flag on an ocean beach, that means the water is too dangerous for swimming. 如果你在海滩上看到一面红旗,那意味着这片水域太危险了,不能游泳...
Red road sign "Stop" against the background of red and yellow autumn trees close-up a symbolic sign,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想
很多人的答案都是“ red and green lights”,那你们应该也想过把“黄灯” 加进去red and yellow and green lights...这也太长了,而且也不地道。 1、“红绿灯”不是 red green light! “红绿灯”的专有名词:Traffic(signal) light 例句: The traffic light changed from red to green. 交通灯从红色变...
However, the road rules for drivers were not very clear and many people were hurt crossing the roads. Yellow warning signs had to be placed beside the roads to remind drivers to take care and allow people to cross safely. Today, towns and cities all over the world have traffic lights. ...
Back in the 1900s, some stop signs were yellow because it was too hard to see a red sign in a poorly lit area. Finally, highly reflective materials (高反射材料) were developed and red stop signs were born. Since yellow can be seen well at all times of the day, school zones, some ...
But what of those mysterious yellow stop signs? As materials and technologies evolved, the ability to produce highly reflective signs meant that red could resume its natural spot in the sign hierarchy, leaving the still-highly-visible yellow to the domain (领域) of "caution". That’s why scho...
Road White Street Red Sign Yellow Blocked Detour Roadworks Barriers Reconstruction City Driving Building Industry Traffic Transportation Industrial Arrow More stock footage of the same categories HD Excavator arm scoops up a bucket full of soil and rocks dur...
A yellow - or amber - light means the red light is about to appear. You must stop if you can do so safely; otherwise, go with caution. 黄灯或琥珀灯表示红灯即将出现。保证安全时,你必须停下来;否则,小心行事。 Red light A red l...
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很多人的答案都是“ red and green lights”,那你们应该也想过把“黄灯” 加进去red and yellow and green lights...这也太长了,而且也不地道。 1、“红绿灯”不是 red green light! “红绿灯”的专有名词:Traffic(signal) light 例句: The