每日背誦第三期47
Our ancestors enjoyed a cleaner world. The water and air were cleaner, and when people went out at night, they could look at the stars above and ask questions about our place in the universe. Nowadays, in modern cities, we can barely see the stars at night because our view of them is not only obscured by the quality of the air, but by the quality of light as well. Not many people realize that the misuse or misdirection of light is a form of pollution. Quite simply, it is called light pollution.
我們的祖先享有比較干凈的世界。那時的空氣和水都比較干凈，人們晚上外出時，可以看著天上的繁星，探討我們在宇宙空間的位置的有關(guān)課題。如今，在現(xiàn)代化的都市中，我們晚上幾乎難得一見天上的星星，由于空氣和光線的質(zhì)量，使星空的景像變得模糊不清。很多人不知道光線的濫用和亂射也是一種污染。簡單地說，這就叫做“光污染”。
(短文節(jié)選,本期開始連載： 都是光“害”的！)
