重点讲解：

1.center around 以...为中心
The structure of international trade comes to center around information products and intangible goods.
国际贸易格局正向着以信息产品及服务为中心的贸易格局转变]dFU3iQ1&)T。

2.win back 赢回

It is very common for gamblers to feel they should keep gambling until they win back their losses.
赌徒很多时候认为他们应该继续赌博，直至赢回他们输掉的钱nkAhQrrUc#i|3KI。