eclipse phase

例句：

1. 1.During the eclipse phase, the sun's disk is completely covered by the moon.
   在日食阶段，太阳的圆盘被月亮完全遮住。
2. 2. The eclipse phase is a rare opportunity for astronomers to observe the planet Mercury.
   日食阶段是天文学家观察水星的罕见机会。
3. 3. The eclipse phase is also a time when scientists study the behavior of the Sun and Moon.
   日食阶段也是科学家研究太阳和月亮行为的时间。