Perseids

例句：

1. 1. The Perseids are a popular meteor shower that occurs annually.
   猎户座流星雨是每年都会发生的一个受欢迎的流星雨。
2. 2. This year's Perseids are expected to be the most spectacular yet.
   今年的猎户座流星雨预计将是最壮观的。
3. 3. Astronomers have been studying the Perseids for decades in hopes of predicting when they will occur.
   天文学家们几十年来一直在研究猎户座流星雨，希望预测它们何时会发生。