1、The magnetosphere is the region around a planet where its magnetic field is dominant over the solar wind’s magnetic field.
磁气圈是绕行星在其磁场占优势于太阳风磁场的区域。
2、The Earth's magnetosphere protects the planet from the harmful effects of the solar wind.
地球的磁气圈保护了地球免受太阳风的有害影响。