英汉词典

1. （地球的）半球
    A hemisphere is one half of the earth.

hemisphere是什么意思

    e.g. ...the northern hemisphere.
           北半球

2. （大脑的）半球
    A hemisphere is one half of the brain.

    e.g. In most people, the left hemisphere is bigger than the right.
           多数人的左脑比右脑大。