这台老式收音机的调频范围是500到1500赫兹。

The vintage radio's frequency ranges from 500 to 1500 ___hertz.

赫歇尔在18世纪为天文学做出了重大贡献。

___Herschel made significant contributions to astronomy in the 18th century.

我的Herschel旅行包既时尚又耐用。

My ___Herschel travel bag is both stylish and durable.