Photoperiodicity
[生态]光照周期性
🗣️ 情景例句
it suddenly became real.
一切突然成真了。
Children enter school at the age of five,don't they?
孩子们在5岁时入学吗？
A telescope would have to be as far away as the planet Jupiter to look for life in outer space, because the dust becomes thinner the further we travel towards the outer edges of our own solar system.
望远镜要放置在木星那样遥远的行星上才有可能在外层空间搜寻生命。因为我们越是接近太阳系的边缘，尘埃就越稀薄。