Artists of all ages joined Seeger on stage to sing the folk and protest songs that he made popular, like this one, "If I Had a Hammer."
VOA: special.2009.05.22
So just to hammer home this point, for now, a function really is like a black box.
现在再三强调,让你们彻底了解这一点,一个函数就像是一个黑盒子。
There's a famous saying, "If you're good with a hammer, everything looks like a nail."
正像一句名言说的那样,如果你很会用锤子,那么一切看上去都是钉子“
People said he worked so fast that his hammer moved like lightening.
VOA: special.2009.02.21
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