Lunar eclipses occur only during the full moon phase.

月食只发生在满月阶段。

Lunar eclipses occur only  during the full moon phase.

月食只发生在满月期间。

A Jupiter-star would appear red and a bit brighter than the Moon at its full phase.

木星会呈现红色， 并且比满月时的月亮亮一点。