Nán Hǎi / jì shì / zhòng yào / de / biān yuán hǎi / yě / lián jiē zhe / duō tiáo / fán máng de / guó jì háng xiàn

南海既是重要的边缘海，也连接着多条繁忙的国际航线。

The South China Sea is both an important marginal sea and a link between several busy international shipping routes.