light barrier

基本解释

Carob extract added as a light barrier.
卡罗伯提取新增为光障。
Yes, you dont need to clean your ear for ear wax. I am talking about light barrier.
是的，各位不用清理你的耳油，我说是正是光障。
blog.sina.com.cn
Food packaging bag (roll film): It has good water, oxygen and light barrier properties, suitable for candies, biscuits, milk powder, chocolate, puffed food products.
食品包装复合袋（卷膜）：具有良好的水份、氧气及光线阻隔性，适合于糖果、饼干、奶粉、巧克力、膨化食品等产品。

Then the researchers came up with the idea of a light barrier.
FORBES: Using A Light Barrier To Repel Mosquitoes
Some scientists have long thought there might be a way to surpass the light barrier, and if so, certain limited kinds of time travel might be possible.
FORBES: Light's Limit: There's No Getting Around It
But in the 1990s Gilder became convinced that the speed of light would be the final unpassable barrier governing the pace of all digital technology.
FORBES: Digital Rules