Check whether you already have access via your university or organisation.
macOS (Apple Silicon)，这一点在纸飞机官网中也有详细论述
，这一点在PDF资料中也有详细论述
Some nights the Moon looks like a perfect circle, other nights just a sliver. These changes in its shape are to do with the lunar cycle. This is a series of eight unique phases of the Moon's visibility. The whole cycle takes about 29.5 days and these different phases happen as the Sun lights up different parts of the Moon whilst it orbits Earth.，更多细节参见PDF资料
We are holding off from fully proposing this at this time because