全球来讲，自1974年世界卫生组织开展扩大免疫规划以来，接种率已经显著提高。
Globally, coverage has greatly increased since WHO's Expanded Programme on Immunization began in 1974.
抢篮板和贡献强硬的防守(拜纳姆在过去几年已经显著提高的技术)才是从他身上最需要的。
Rebounding and providing tough interior defense-something that Andrew Bynum has greatly improved on over the past couple of years-are what is needed most from him.
马伦上将承认，美国对巴基斯坦核武状况的了解程度有限，不过他说，巴基斯坦最近几年中已经显著提高了其核武库的安全性。
Mullen acknowledges there is a limit to what the United States knows about Pakistan's nuclear weapons, but he says Islamabad has made dramatic improvements in the arsenal's security in recent years.
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