noun [具体名词]（地球的）半球；脑半球；（球体的）一半 the northern / southern / eastern / western hemisphere
Of course, were they the first people in the Western hemisphere?
当然，他们是西半球的第一批人吗？
hemi(半) + spher(球) + e → 半球
单词造句:
Of course, were they the first people in the Western hemisphere?
当然，他们是西半球的第一批人吗？