Our nation's blood supply is safer than it's ever been, and it's getting safer as we speak.

Our nation's blood supply is safer than it's ever been, and it's getting safer as we speak.

我们国家的血液供应比以往任何时候都安全，而且就在我们说话的时候，血液供应也越来越安全。

-- David Satcher 大卫·撒切尔