contested a. 有争议的,收到竞争的
commander n. 指挥官
conduct v. 实施,引导,管理
decade n. 十年
patrol n. 猜一下吧
The US has said it plans to return to contested areas of the South China Sea, with a top military commander saying it has conducted similar operations worldwide "for decades".
The sailing of a US warship within an area claimed by China last week angered Beijing, which issued a warning.
Adm Harry Harris, speaking in Beijing, said such moves should surprise no-one.
An unnamed US official earlier told Reuters similar patrols would take place at least "twice a quarter".