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RNA干擾是一個迷人的過程，它為理解基因調(diào)控開辟了新的途徑，并具有潛在的治療應(yīng)用。

That “democracy” is a somewhat vague term which I cannot define precisely. We ought to say, therefore: “I am fairly certain that it is a good thing if a government has something of the characteristics that are common to the British and American Constitutions,” or something of this sort.

I don't think that everyone should become a mathematician, but I do believe that many students don't give mathematics a real chance.

書會說：她這么做是因為。生活說：她這么做了。書是向你解釋事情的地方；生活是事情沒有解釋的地方。

The key to success is to keep trying, even when things don't work out the first time.