但是这些气泡只是轻微地使地球变亮，在1%的地球反射率中占不到十分之一。

But these bubbles only lightly brighten the planet, contributing less than one-tenth of 1% of Earth's reflectivity, or albedo.

youdao

操控光亮：使周围的亮度变亮或变暗。

Control light. Adjust light levels up or down.

youdao

如果混合色(光源)比50%灰色亮，则通过增加亮度使图像变亮。

If the blend color (light source) is lighter than 50% gray, the image is lightened by decreasing the contrast.

youdao