n.  〔地球的〕半球〔尤指北半球或南半球〕

n.  〔大脑的〕半球

n.  〔球体的〕一半，半球

• the northern/southern hemisphere  北╱南半球

• the left/right cerebral hemisphere  大脑左╱右半球

• Researchers from Brown University found that a network in the left hemisphere of the brain “remained more active” than the network in the right side of the brain.

• As some countries expand operations in Antarctica, the United States maintains three year-round stations on the continent with more than 1,000 people during the southern hemisphere's summer, including those at the Amundsen-Scott station, built in 1956 at an elevation of 9,301 feet on a plateau at the South Pole.

BrE /əˌbriːviˈeɪʃn/