我们需要一个更亮的光源来阅读。

We need a brighter light source to read.

这个房间的唯一光源是那盏灯。

The only light source in this room is that lamp.

太阳是地球上最重要的光源。

The sun is the most important light source on Earth.

蛾通常在夜间被光源吸引。

Moths are often attracted to light sources at night.

这个实验需要一个棱镜和一个光源。

This experiment requires a prism and a light source.

他们在实验中使用了激光作为光源。

They used a laser as the light source in their experiment.

你可以调整光源的角度以减少阴影。

You can adjust the angle of the light source to reduce shadows.

植物的趋光性使它们朝向光源生长。

The phototaxis of plants makes them grow towards the light source.

植物通过向光源弯曲表现出向光性。

The plant exhibits phototropism by bending towards the light source.

辐射计可以帮助确定光源的能量输出。

A radiometer can help determine the energy output of a light source.