rapidly oscillating Ap star

例句：

1. 1.The waves were oscillating back and forth across the beach.
   波浪在海滩上来回振荡。
2. 2.The light bulb was oscillating in a strange rhythm.
   灯泡以奇怪的节奏振荡着。
3. 3.The heart is an oscillating organ that pumps blood around the body.
   心脏是一种振荡器官，负责将血液泵送到身体各处。