It's these three islands that have been the focus of China's building in the South China Sea over recent years.

这三个岛屿是近年来中国在南海建设的重点。

When I moved out to Africa with the intention of studying things like great white sharks, I actually shifted my focus over to manta rays when I realized that no one had ever done a study on manta rays before.

当我搬到非洲去研究像大白鲨这样的东西时，我意识到没有人曾经做过关于蝠鲼的研究，就把注意力转移到了蝠鲼身上。