透镜会把图片放大，就像在看巨大的电视屏幕一样。A lens would magnify the picture so it would be like looking at a large TV screen.这大概是因为胶合透镜会因温度变化而变形.Probably because the cemented lenses are distorted by temperature variations.我们用一块负透镜,它将使光线发散一些...
The weather forecast is for showers and overcast skies...天气预报上说多云并伴有阵雨。The night skies will be aglow with fireworks.焰火将点亮夜空。The weather was at its worst; bitterly cold, with leaden skies that gave minimum visibility.天气极其...