学校每天发布关于天气变化的公告。

The school releases daily ___bulletins about weather changes.

学校每周发送电子简报，告知家长重要日程安排。

The school sends out weekly ___bulletins to inform parents about important schedules.

我每天早上收听新闻简报了解最新动态。

I listen to the morning ___bulletins to stay updated on the latest news.