“磁场”的英语表达是 magnetic field 。其中,“magnetic”意为“磁的;有磁性的”,“field”常见含义之一为“场;领域” ,二者组合就表示“磁场”这一物理概念。
例句:
The magnetic field around a bar magnet can be visualized using iron filings. (条形磁铁周围的磁场可以用铁屑来显现。)
Earth has its own magnetic field, which protects us from harmful solar radiation. (地球有自己的磁场,它保护我们免受有害的太阳辐射。)