The only meaningful way to study learning is through objective measurement.

让我们清楚一点：只是限制广告不健康的食物是不够的。增加对健康食品的'营销也很关键。

Courage to fail is just as important as the will to succeed.

Money is like manure， its only good if you spread it around.

指出人性中的贪婪和恶意有时比超自然力量更令人畏惧。

解释：每种药材的生长都有其特定的环境和条件，说明药材产地与品质的关系。