They are known as "second generation" drugs, designed to alleviate side effects of older "first generation" medicines that often caused muscle spasms and stiffness.

VOA: standard.2010.07.08

But nevertheless, let's just go with this for a minute, and if we suppose that it took about a generation to enter the land so you see, I've done the math on the side here.

无论如何，我们还是要稍微讨论一下，假设，进入这块土地要一代人的努力,你看，我已经在这边做了算术。

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