1、 The Northern Hemisphere is the part of the world north of the equator， and the Southern Hemisphere is south of the equator、北半球是地球赤道以北的部分，南半球是赤道以南的部分。
2、 If you cut a round fruit into two， each half is a hemisphere、如果你把一个圆的水果切成两半，每一半就是一个半球。
3、 What is the largest city in the southern hemisphere?南半球上哪个城市最大？
